Home / 90,842.28-136,262.20-31,677.75

Finding the Fourth Proportional to 90,842.28, 136,262.20 and 31,677.75

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Solution

The fourth proportional to 90,842.28, 136,262.20 and 31,677.75 is: 47,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,842.28 : 136,262.20 = 31,677.75 : x
  2. Step 2: Convert to fraction form
    90,842.28/136,262.20 = 31,677.75/x
  3. Step 3: Cross multiply
    90,842.28x = 136,262.20 × 31,677.75
  4. Step 4: Simplify right side
    90,842.28x = 4,316,479,886.25
  5. Step 5: Solve for x
    x = 4,316,479,886.25/90,842.28
  6. Step 6: Final answer
    x = 47,516.20

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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.