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Finding the Fourth Proportional to 72,002.55, 107,957.43 and 29,911.60

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Solution

The fourth proportional to 72,002.55, 107,957.43 and 29,911.60 is: 44,848.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,002.55 : 107,957.43 = 29,911.60 : x
  2. Step 2: Convert to fraction form
    72,002.55/107,957.43 = 29,911.60/x
  3. Step 3: Cross multiply
    72,002.55x = 107,957.43 × 29,911.60
  4. Step 4: Simplify right side
    72,002.55x = 3,229,179,463.19
  5. Step 5: Solve for x
    x = 3,229,179,463.19/72,002.55
  6. Step 6: Final answer
    x = 44,848.13

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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.