Home / 80,402.22-121,332.96-77,722.29

Finding the Fourth Proportional to 80,402.22, 121,332.96 and 77,722.29

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Solution

The fourth proportional to 80,402.22, 121,332.96 and 77,722.29 is: 117,288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,402.22 : 121,332.96 = 77,722.29 : x
  2. Step 2: Convert to fraction form
    80,402.22/121,332.96 = 77,722.29/x
  3. Step 3: Cross multiply
    80,402.22x = 121,332.96 × 77,722.29
  4. Step 4: Simplify right side
    80,402.22x = 9,430,275,503.68
  5. Step 5: Solve for x
    x = 9,430,275,503.68/80,402.22
  6. Step 6: Final answer
    x = 117,288.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.