Home / 71,998.47-99,359.06-40,167.90

Finding the Fourth Proportional to 71,998.47, 99,359.06 and 40,167.90

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Solution

The fourth proportional to 71,998.47, 99,359.06 and 40,167.90 is: 55,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,998.47 : 99,359.06 = 40,167.90 : x
  2. Step 2: Convert to fraction form
    71,998.47/99,359.06 = 40,167.90/x
  3. Step 3: Cross multiply
    71,998.47x = 99,359.06 × 40,167.90
  4. Step 4: Simplify right side
    71,998.47x = 3,991,044,585.33
  5. Step 5: Solve for x
    x = 3,991,044,585.33/71,998.47
  6. Step 6: Final answer
    x = 55,432.35

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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.