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Finding the Fourth Proportional to 74,737.52, 112,135.44 and 43,130.90

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Solution

The fourth proportional to 74,737.52, 112,135.44 and 43,130.90 is: 64,713.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,737.52 : 112,135.44 = 43,130.90 : x
  2. Step 2: Convert to fraction form
    74,737.52/112,135.44 = 43,130.90/x
  3. Step 3: Cross multiply
    74,737.52x = 112,135.44 × 43,130.90
  4. Step 4: Simplify right side
    74,737.52x = 4,836,502,449.10
  5. Step 5: Solve for x
    x = 4,836,502,449.10/74,737.52
  6. Step 6: Final answer
    x = 64,713.18

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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.