Home / 90,856.50-136,285.35-31,691.94

Finding the Fourth Proportional to 90,856.50, 136,285.35 and 31,691.94

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Solution

The fourth proportional to 90,856.50, 136,285.35 and 31,691.94 is: 47,538.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,856.50 : 136,285.35 = 31,691.94 : x
  2. Step 2: Convert to fraction form
    90,856.50/136,285.35 = 31,691.94/x
  3. Step 3: Cross multiply
    90,856.50x = 136,285.35 × 31,691.94
  4. Step 4: Simplify right side
    90,856.50x = 4,319,147,135.08
  5. Step 5: Solve for x
    x = 4,319,147,135.08/90,856.50
  6. Step 6: Final answer
    x = 47,538.12

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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.