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Finding the Fourth Proportional to 74,891.80, 112,007.22 and 66,629.80

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Solution

The fourth proportional to 74,891.80, 112,007.22 and 66,629.80 is: 99,650.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,891.80 : 112,007.22 = 66,629.80 : x
  2. Step 2: Convert to fraction form
    74,891.80/112,007.22 = 66,629.80/x
  3. Step 3: Cross multiply
    74,891.80x = 112,007.22 × 66,629.80
  4. Step 4: Simplify right side
    74,891.80x = 7,463,018,667.16
  5. Step 5: Solve for x
    x = 7,463,018,667.16/74,891.80
  6. Step 6: Final answer
    x = 99,650.68

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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.