Home / 80,579.17-120,277.27-74,641.47

Finding the Fourth Proportional to 80,579.17, 120,277.27 and 74,641.47

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Solution

The fourth proportional to 80,579.17, 120,277.27 and 74,641.47 is: 111,414.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,579.17 : 120,277.27 = 74,641.47 : x
  2. Step 2: Convert to fraction form
    80,579.17/120,277.27 = 74,641.47/x
  3. Step 3: Cross multiply
    80,579.17x = 120,277.27 × 74,641.47
  4. Step 4: Simplify right side
    80,579.17x = 8,977,672,240.39
  5. Step 5: Solve for x
    x = 8,977,672,240.39/80,579.17
  6. Step 6: Final answer
    x = 111,414.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.