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Finding the Fourth Proportional to 66,287.52, 99,416.88 and 21,903.76

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Solution

The fourth proportional to 66,287.52, 99,416.88 and 21,903.76 is: 32,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,287.52 : 99,416.88 = 21,903.76 : x
  2. Step 2: Convert to fraction form
    66,287.52/99,416.88 = 21,903.76/x
  3. Step 3: Cross multiply
    66,287.52x = 99,416.88 × 21,903.76
  4. Step 4: Simplify right side
    66,287.52x = 2,177,603,479.47
  5. Step 5: Solve for x
    x = 2,177,603,479.47/66,287.52
  6. Step 6: Final answer
    x = 32,850.88

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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.