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Finding the Fourth Proportional to 72,742, 100,385.38 and 44,062.74

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Solution

The fourth proportional to 72,742, 100,385.38 and 44,062.74 is: 60,807.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,742 : 100,385.38 = 44,062.74 : x
  2. Step 2: Convert to fraction form
    72,742/100,385.38 = 44,062.74/x
  3. Step 3: Cross multiply
    72,742x = 100,385.38 × 44,062.74
  4. Step 4: Simplify right side
    72,742x = 4,423,254,898.74
  5. Step 5: Solve for x
    x = 4,423,254,898.74/72,742
  6. Step 6: Final answer
    x = 60,807.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.