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Finding the Fourth Proportional to 72,459.43, 108,688.64 and 22,539.53

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Solution

The fourth proportional to 72,459.43, 108,688.64 and 22,539.53 is: 33,809.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,459.43 : 108,688.64 = 22,539.53 : x
  2. Step 2: Convert to fraction form
    72,459.43/108,688.64 = 22,539.53/x
  3. Step 3: Cross multiply
    72,459.43x = 108,688.64 × 22,539.53
  4. Step 4: Simplify right side
    72,459.43x = 2,449,791,020.96
  5. Step 5: Solve for x
    x = 2,449,791,020.96/72,459.43
  6. Step 6: Final answer
    x = 33,809.14

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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.