Home / 81,249.60-112,123.66-45,439.20

Finding the Fourth Proportional to 81,249.60, 112,123.66 and 45,439.20

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Solution

The fourth proportional to 81,249.60, 112,123.66 and 45,439.20 is: 62,705.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249.60 : 112,123.66 = 45,439.20 : x
  2. Step 2: Convert to fraction form
    81,249.60/112,123.66 = 45,439.20/x
  3. Step 3: Cross multiply
    81,249.60x = 112,123.66 × 45,439.20
  4. Step 4: Simplify right side
    81,249.60x = 5,094,809,411.47
  5. Step 5: Solve for x
    x = 5,094,809,411.47/81,249.60
  6. Step 6: Final answer
    x = 62,705.66

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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.