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Finding the Fourth Proportional to 74,891.30, 112,006.47 and 66,629.30

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Solution

The fourth proportional to 74,891.30, 112,006.47 and 66,629.30 is: 99,649.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,891.30 : 112,006.47 = 66,629.30 : x
  2. Step 2: Convert to fraction form
    74,891.30/112,006.47 = 66,629.30/x
  3. Step 3: Cross multiply
    74,891.30x = 112,006.47 × 66,629.30
  4. Step 4: Simplify right side
    74,891.30x = 7,462,912,691.57
  5. Step 5: Solve for x
    x = 7,462,912,691.57/74,891.30
  6. Step 6: Final answer
    x = 99,649.93

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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.