Home / 85,461,965.04-128,193,107.76-20,765,824.80

Finding the Fourth Proportional to 85,461,965.04, 128,193,107.76 and 20,765,824.80

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Solution

The fourth proportional to 85,461,965.04, 128,193,107.76 and 20,765,824.80 is: 31,148,776.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,461,965.04 : 128,193,107.76 = 20,765,824.80 : x
  2. Step 2: Convert to fraction form
    85,461,965.04/128,193,107.76 = 20,765,824.80/x
  3. Step 3: Cross multiply
    85,461,965.04x = 128,193,107.76 × 20,765,824.80
  4. Step 4: Simplify right side
    85,461,965.04x = 2,662,035,616,311,680.50
  5. Step 5: Solve for x
    x = 2,662,035,616,311,680.50/85,461,965.04
  6. Step 6: Final answer
    x = 31,148,776.13

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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.