Home / 90,861.39-136,293.27-28,531.89

Finding the Fourth Proportional to 90,861.39, 136,293.27 and 28,531.89

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Solution

The fourth proportional to 90,861.39, 136,293.27 and 28,531.89 is: 42,798.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,861.39 : 136,293.27 = 28,531.89 : x
  2. Step 2: Convert to fraction form
    90,861.39/136,293.27 = 28,531.89/x
  3. Step 3: Cross multiply
    90,861.39x = 136,293.27 × 28,531.89
  4. Step 4: Simplify right side
    90,861.39x = 3,888,704,587.38
  5. Step 5: Solve for x
    x = 3,888,704,587.38/90,861.39
  6. Step 6: Final answer
    x = 42,798.21

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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.