Home / 91,868.36-137,822.20-31,898.70

Finding the Fourth Proportional to 91,868.36, 137,822.20 and 31,898.70

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Solution

The fourth proportional to 91,868.36, 137,822.20 and 31,898.70 is: 47,854.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,868.36 : 137,822.20 = 31,898.70 : x
  2. Step 2: Convert to fraction form
    91,868.36/137,822.20 = 31,898.70/x
  3. Step 3: Cross multiply
    91,868.36x = 137,822.20 × 31,898.70
  4. Step 4: Simplify right side
    91,868.36x = 4,396,348,931.39
  5. Step 5: Solve for x
    x = 4,396,348,931.39/91,868.36
  6. Step 6: Final answer
    x = 47,854.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.