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Finding the Fourth Proportional to 66,012.90, 99,007.20 and 41,008.20

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Solution

The fourth proportional to 66,012.90, 99,007.20 and 41,008.20 is: 61,504.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,012.90 : 99,007.20 = 41,008.20 : x
  2. Step 2: Convert to fraction form
    66,012.90/99,007.20 = 41,008.20/x
  3. Step 3: Cross multiply
    66,012.90x = 99,007.20 × 41,008.20
  4. Step 4: Simplify right side
    66,012.90x = 4,060,107,059.04
  5. Step 5: Solve for x
    x = 4,060,107,059.04/66,012.90
  6. Step 6: Final answer
    x = 61,504.75

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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.