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Finding the Fourth Proportional to 66,422.10, 99,633.15 and 63,657.30

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Solution

The fourth proportional to 66,422.10, 99,633.15 and 63,657.30 is: 95,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,422.10 : 99,633.15 = 63,657.30 : x
  2. Step 2: Convert to fraction form
    66,422.10/99,633.15 = 63,657.30/x
  3. Step 3: Cross multiply
    66,422.10x = 99,633.15 × 63,657.30
  4. Step 4: Simplify right side
    66,422.10x = 6,342,377,319.50
  5. Step 5: Solve for x
    x = 6,342,377,319.50/66,422.10
  6. Step 6: Final answer
    x = 95,485.95

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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.