Home / 90,874.08-136,301.39-31,710.87

Finding the Fourth Proportional to 90,874.08, 136,301.39 and 31,710.87

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Solution

The fourth proportional to 90,874.08, 136,301.39 and 31,710.87 is: 47,562.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,874.08 : 136,301.39 = 31,710.87 : x
  2. Step 2: Convert to fraction form
    90,874.08/136,301.39 = 31,710.87/x
  3. Step 3: Cross multiply
    90,874.08x = 136,301.39 × 31,710.87
  4. Step 4: Simplify right side
    90,874.08x = 4,322,235,500.55
  5. Step 5: Solve for x
    x = 4,322,235,500.55/90,874.08
  6. Step 6: Final answer
    x = 47,562.91

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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.