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Finding the Fourth Proportional to 82,227.60, 123,211.80 and 69,008.40

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Solution

The fourth proportional to 82,227.60, 123,211.80 and 69,008.40 is: 103,403.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,227.60 : 123,211.80 = 69,008.40 : x
  2. Step 2: Convert to fraction form
    82,227.60/123,211.80 = 69,008.40/x
  3. Step 3: Cross multiply
    82,227.60x = 123,211.80 × 69,008.40
  4. Step 4: Simplify right side
    82,227.60x = 8,502,649,179.12
  5. Step 5: Solve for x
    x = 8,502,649,179.12/82,227.60
  6. Step 6: Final answer
    x = 103,403.83

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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.