Home / 91,540.43-137,325.45-28,345.70

Finding the Fourth Proportional to 91,540.43, 137,325.45 and 28,345.70

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Solution

The fourth proportional to 91,540.43, 137,325.45 and 28,345.70 is: 42,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,540.43 : 137,325.45 = 28,345.70 : x
  2. Step 2: Convert to fraction form
    91,540.43/137,325.45 = 28,345.70/x
  3. Step 3: Cross multiply
    91,540.43x = 137,325.45 × 28,345.70
  4. Step 4: Simplify right side
    91,540.43x = 3,892,585,392.30
  5. Step 5: Solve for x
    x = 3,892,585,392.30/91,540.43
  6. Step 6: Final answer
    x = 42,523.13

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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.