Home / 81,444.87-121,610.24-72,956.58

Finding the Fourth Proportional to 81,444.87, 121,610.24 and 72,956.58

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Solution

The fourth proportional to 81,444.87, 121,610.24 and 72,956.58 is: 108,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,444.87 : 121,610.24 = 72,956.58 : x
  2. Step 2: Convert to fraction form
    81,444.87/121,610.24 = 72,956.58/x
  3. Step 3: Cross multiply
    81,444.87x = 121,610.24 × 72,956.58
  4. Step 4: Simplify right side
    81,444.87x = 8,872,266,838.60
  5. Step 5: Solve for x
    x = 8,872,266,838.60/81,444.87
  6. Step 6: Final answer
    x = 108,935.86

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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.