Home / 78,000,309,790.48-116,963,581,345.08-30,215,699,272.72

Finding the Fourth Proportional to 78,000,309,790.48, 116,963,581,345.08 and 30,215,699,272.72

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Solution

The fourth proportional to 78,000,309,790.48, 116,963,581,345.08 and 30,215,699,272.72 is: 45,309,261,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,000,309,790.48 : 116,963,581,345.08 = 30,215,699,272.72 : x
  2. Step 2: Convert to fraction form
    78,000,309,790.48/116,963,581,345.08 = 30,215,699,272.72/x
  3. Step 3: Cross multiply
    78,000,309,790.48x = 116,963,581,345.08 × 30,215,699,272.72
  4. Step 4: Simplify right side
    78,000,309,790.48x = 3,534,136,399,783,260,585,984
  5. Step 5: Solve for x
    x = 3,534,136,399,783,260,585,984/78,000,309,790.48
  6. Step 6: Final answer
    x = 45,309,261,069.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.