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Finding the Fourth Proportional to 81,250.40, 121,616.40 and 63,624.80

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Solution

The fourth proportional to 81,250.40, 121,616.40 and 63,624.80 is: 95,234.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,250.40 : 121,616.40 = 63,624.80 : x
  2. Step 2: Convert to fraction form
    81,250.40/121,616.40 = 63,624.80/x
  3. Step 3: Cross multiply
    81,250.40x = 121,616.40 × 63,624.80
  4. Step 4: Simplify right side
    81,250.40x = 7,737,819,126.72
  5. Step 5: Solve for x
    x = 7,737,819,126.72/81,250.40
  6. Step 6: Final answer
    x = 95,234.23

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1.5x scale

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.