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Finding the Fourth Proportional to 66,120.30, 99,007.92 and 36,475.92

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Solution

The fourth proportional to 66,120.30, 99,007.92 and 36,475.92 is: 54,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.30 : 99,007.92 = 36,475.92 : x
  2. Step 2: Convert to fraction form
    66,120.30/99,007.92 = 36,475.92/x
  3. Step 3: Cross multiply
    66,120.30x = 99,007.92 × 36,475.92
  4. Step 4: Simplify right side
    66,120.30x = 3,611,404,969.29
  5. Step 5: Solve for x
    x = 3,611,404,969.29/66,120.30
  6. Step 6: Final answer
    x = 54,618.70

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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.