Home / 90,701.57-136,064.68-31,529.59

Finding the Fourth Proportional to 90,701.57, 136,064.68 and 31,529.59

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Solution

The fourth proportional to 90,701.57, 136,064.68 and 31,529.59 is: 47,298.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,701.57 : 136,064.68 = 31,529.59 : x
  2. Step 2: Convert to fraction form
    90,701.57/136,064.68 = 31,529.59/x
  3. Step 3: Cross multiply
    90,701.57x = 136,064.68 × 31,529.59
  4. Step 4: Simplify right side
    90,701.57x = 4,290,063,154.90
  5. Step 5: Solve for x
    x = 4,290,063,154.90/90,701.57
  6. Step 6: Final answer
    x = 47,298.66

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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.