Home / 71,920.71-99,255.51-40,094.73

Finding the Fourth Proportional to 71,920.71, 99,255.51 and 40,094.73

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Solution

The fourth proportional to 71,920.71, 99,255.51 and 40,094.73 is: 55,333.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,920.71 : 99,255.51 = 40,094.73 : x
  2. Step 2: Convert to fraction form
    71,920.71/99,255.51 = 40,094.73/x
  3. Step 3: Cross multiply
    71,920.71x = 99,255.51 × 40,094.73
  4. Step 4: Simplify right side
    71,920.71x = 3,979,622,874.46
  5. Step 5: Solve for x
    x = 3,979,622,874.46/71,920.71
  6. Step 6: Final answer
    x = 55,333.48

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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.