Home / 81,711.27-112,772.88-45,903.99

Finding the Fourth Proportional to 81,711.27, 112,772.88 and 45,903.99

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Solution

The fourth proportional to 81,711.27, 112,772.88 and 45,903.99 is: 63,353.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,711.27 : 112,772.88 = 45,903.99 : x
  2. Step 2: Convert to fraction form
    81,711.27/112,772.88 = 45,903.99/x
  3. Step 3: Cross multiply
    81,711.27x = 112,772.88 × 45,903.99
  4. Step 4: Simplify right side
    81,711.27x = 5,176,725,155.79
  5. Step 5: Solve for x
    x = 5,176,725,155.79/81,711.27
  6. Step 6: Final answer
    x = 63,353.87

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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.