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Finding the Fourth Proportional to 86,552.60, 129,828.90 and 82,275.80

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Solution

The fourth proportional to 86,552.60, 129,828.90 and 82,275.80 is: 123,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,552.60 : 129,828.90 = 82,275.80 : x
  2. Step 2: Convert to fraction form
    86,552.60/129,828.90 = 82,275.80/x
  3. Step 3: Cross multiply
    86,552.60x = 129,828.90 × 82,275.80
  4. Step 4: Simplify right side
    86,552.60x = 10,681,776,610.62
  5. Step 5: Solve for x
    x = 10,681,776,610.62/86,552.60
  6. Step 6: Final answer
    x = 123,413.70

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Similar ratio
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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.