Home / 74,713.92-111,740.16-66,451.68

Finding the Fourth Proportional to 74,713.92, 111,740.16 and 66,451.68

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Solution

The fourth proportional to 74,713.92, 111,740.16 and 66,451.68 is: 99,383.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,713.92 : 111,740.16 = 66,451.68 : x
  2. Step 2: Convert to fraction form
    74,713.92/111,740.16 = 66,451.68/x
  3. Step 3: Cross multiply
    74,713.92x = 111,740.16 × 66,451.68
  4. Step 4: Simplify right side
    74,713.92x = 7,425,321,355.47
  5. Step 5: Solve for x
    x = 7,425,321,355.47/74,713.92
  6. Step 6: Final answer
    x = 99,383.37

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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.