Home / 71,920.59-99,252.39-40,091.64

Finding the Fourth Proportional to 71,920.59, 99,252.39 and 40,091.64

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Solution

The fourth proportional to 71,920.59, 99,252.39 and 40,091.64 is: 55,327.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,920.59 : 99,252.39 = 40,091.64 : x
  2. Step 2: Convert to fraction form
    71,920.59/99,252.39 = 40,091.64/x
  3. Step 3: Cross multiply
    71,920.59x = 99,252.39 × 40,091.64
  4. Step 4: Simplify right side
    71,920.59x = 3,979,191,089.02
  5. Step 5: Solve for x
    x = 3,979,191,089.02/71,920.59
  6. Step 6: Final answer
    x = 55,327.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.