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Finding the Fourth Proportional to 66,285.52, 99,413.88 and 21,901.76

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Solution

The fourth proportional to 66,285.52, 99,413.88 and 21,901.76 is: 32,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,285.52 : 99,413.88 = 21,901.76 : x
  2. Step 2: Convert to fraction form
    66,285.52/99,413.88 = 21,901.76/x
  3. Step 3: Cross multiply
    66,285.52x = 99,413.88 × 21,901.76
  4. Step 4: Simplify right side
    66,285.52x = 2,177,338,940.43
  5. Step 5: Solve for x
    x = 2,177,338,940.43/66,285.52
  6. Step 6: Final answer
    x = 32,847.88

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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.