Home / 74,712.17-103,099.76-40,719.92

Finding the Fourth Proportional to 74,712.17, 103,099.76 and 40,719.92

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Solution

The fourth proportional to 74,712.17, 103,099.76 and 40,719.92 is: 56,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,712.17 : 103,099.76 = 40,719.92 : x
  2. Step 2: Convert to fraction form
    74,712.17/103,099.76 = 40,719.92/x
  3. Step 3: Cross multiply
    74,712.17x = 103,099.76 × 40,719.92
  4. Step 4: Simplify right side
    74,712.17x = 4,198,213,565.52
  5. Step 5: Solve for x
    x = 4,198,213,565.52/74,712.17
  6. Step 6: Final answer
    x = 56,191.83

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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.