Home / 84,772.71-127,155.07-31,475.29

Finding the Fourth Proportional to 84,772.71, 127,155.07 and 31,475.29

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Solution

The fourth proportional to 84,772.71, 127,155.07 and 31,475.29 is: 47,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,772.71 : 127,155.07 = 31,475.29 : x
  2. Step 2: Convert to fraction form
    84,772.71/127,155.07 = 31,475.29/x
  3. Step 3: Cross multiply
    84,772.71x = 127,155.07 × 31,475.29
  4. Step 4: Simplify right side
    84,772.71x = 4,002,242,545.84
  5. Step 5: Solve for x
    x = 4,002,242,545.84/84,772.71
  6. Step 6: Final answer
    x = 47,211.45

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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.