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Finding the Fourth Proportional to 73,143.71, 100,937.42 and 40,878.85

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Solution

The fourth proportional to 73,143.71, 100,937.42 and 40,878.85 is: 56,412.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,143.71 : 100,937.42 = 40,878.85 : x
  2. Step 2: Convert to fraction form
    73,143.71/100,937.42 = 40,878.85/x
  3. Step 3: Cross multiply
    73,143.71x = 100,937.42 × 40,878.85
  4. Step 4: Simplify right side
    73,143.71x = 4,126,205,706.30
  5. Step 5: Solve for x
    x = 4,126,205,706.30/73,143.71
  6. Step 6: Final answer
    x = 56,412.31

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1.5x scale

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.