Home / 81,449.28-122,135.58-31,552.74

Finding the Fourth Proportional to 81,449.28, 122,135.58 and 31,552.74

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Solution

The fourth proportional to 81,449.28, 122,135.58 and 31,552.74 is: 47,314.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449.28 : 122,135.58 = 31,552.74 : x
  2. Step 2: Convert to fraction form
    81,449.28/122,135.58 = 31,552.74/x
  3. Step 3: Cross multiply
    81,449.28x = 122,135.58 × 31,552.74
  4. Step 4: Simplify right side
    81,449.28x = 3,853,712,200.49
  5. Step 5: Solve for x
    x = 3,853,712,200.49/81,449.28
  6. Step 6: Final answer
    x = 47,314.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.