Home / 72,531.21-100,092.81-40,700.04

Finding the Fourth Proportional to 72,531.21, 100,092.81 and 40,700.04

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Solution

The fourth proportional to 72,531.21, 100,092.81 and 40,700.04 is: 56,165.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,531.21 : 100,092.81 = 40,700.04 : x
  2. Step 2: Convert to fraction form
    72,531.21/100,092.81 = 40,700.04/x
  3. Step 3: Cross multiply
    72,531.21x = 100,092.81 × 40,700.04
  4. Step 4: Simplify right side
    72,531.21x = 4,073,781,370.71
  5. Step 5: Solve for x
    x = 4,073,781,370.71/72,531.21
  6. Step 6: Final answer
    x = 56,165.91

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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.