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Finding the Fourth Proportional to 72,220.71, 108,368.84 and 29,557.81

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Solution

The fourth proportional to 72,220.71, 108,368.84 and 29,557.81 is: 44,352.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220.71 : 108,368.84 = 29,557.81 : x
  2. Step 2: Convert to fraction form
    72,220.71/108,368.84 = 29,557.81/x
  3. Step 3: Cross multiply
    72,220.71x = 108,368.84 × 29,557.81
  4. Step 4: Simplify right side
    72,220.71x = 3,203,145,385.61
  5. Step 5: Solve for x
    x = 3,203,145,385.61/72,220.71
  6. Step 6: Final answer
    x = 44,352.17

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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.