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Finding the Fourth Proportional to 57,706.79, 86,332.43 and 43,707.15

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Solution

The fourth proportional to 57,706.79, 86,332.43 and 43,707.15 is: 65,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,706.79 : 86,332.43 = 43,707.15 : x
  2. Step 2: Convert to fraction form
    57,706.79/86,332.43 = 43,707.15/x
  3. Step 3: Cross multiply
    57,706.79x = 86,332.43 × 43,707.15
  4. Step 4: Simplify right side
    57,706.79x = 3,773,344,577.14
  5. Step 5: Solve for x
    x = 3,773,344,577.14/57,706.79
  6. Step 6: Final answer
    x = 65,388.23

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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.