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Finding the Fourth Proportional to 72,001.68, 108,050.72 and 29,881.80

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Solution

The fourth proportional to 72,001.68, 108,050.72 and 29,881.80 is: 44,842.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.68 : 108,050.72 = 29,881.80 : x
  2. Step 2: Convert to fraction form
    72,001.68/108,050.72 = 29,881.80/x
  3. Step 3: Cross multiply
    72,001.68x = 108,050.72 × 29,881.80
  4. Step 4: Simplify right side
    72,001.68x = 3,228,750,004.90
  5. Step 5: Solve for x
    x = 3,228,750,004.90/72,001.68
  6. Step 6: Final answer
    x = 44,842.70

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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.