Home / 81,921.13-113,043.95-45,619.83

Finding the Fourth Proportional to 81,921.13, 113,043.95 and 45,619.83

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Solution

The fourth proportional to 81,921.13, 113,043.95 and 45,619.83 is: 62,951.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.13 : 113,043.95 = 45,619.83 : x
  2. Step 2: Convert to fraction form
    81,921.13/113,043.95 = 45,619.83/x
  3. Step 3: Cross multiply
    81,921.13x = 113,043.95 × 45,619.83
  4. Step 4: Simplify right side
    81,921.13x = 5,157,045,781.53
  5. Step 5: Solve for x
    x = 5,157,045,781.53/81,921.13
  6. Step 6: Final answer
    x = 62,951.35

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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.