Home / 72,771,149.20-109,156,723.80-71,814,555.40

Finding the Fourth Proportional to 72,771,149.20, 109,156,723.80 and 71,814,555.40

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Solution

The fourth proportional to 72,771,149.20, 109,156,723.80 and 71,814,555.40 is: 107,721,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,771,149.20 : 109,156,723.80 = 71,814,555.40 : x
  2. Step 2: Convert to fraction form
    72,771,149.20/109,156,723.80 = 71,814,555.40/x
  3. Step 3: Cross multiply
    72,771,149.20x = 109,156,723.80 × 71,814,555.40
  4. Step 4: Simplify right side
    72,771,149.20x = 7,839,041,588,617,599
  5. Step 5: Solve for x
    x = 7,839,041,588,617,599/72,771,149.20
  6. Step 6: Final answer
    x = 107,721,833.10

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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.