Home / 81,642.40-112,671.56-54,371.73

Finding the Fourth Proportional to 81,642.40, 112,671.56 and 54,371.73

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Solution

The fourth proportional to 81,642.40, 112,671.56 and 54,371.73 is: 75,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,642.40 : 112,671.56 = 54,371.73 : x
  2. Step 2: Convert to fraction form
    81,642.40/112,671.56 = 54,371.73/x
  3. Step 3: Cross multiply
    81,642.40x = 112,671.56 × 54,371.73
  4. Step 4: Simplify right side
    81,642.40x = 6,126,147,639.00
  5. Step 5: Solve for x
    x = 6,126,147,639.00/81,642.40
  6. Step 6: Final answer
    x = 75,036.35

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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.