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Finding the Fourth Proportional to 84,937.92, 127,495.37 and 83,031.78

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Solution

The fourth proportional to 84,937.92, 127,495.37 and 83,031.78 is: 124,634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,937.92 : 127,495.37 = 83,031.78 : x
  2. Step 2: Convert to fraction form
    84,937.92/127,495.37 = 83,031.78/x
  3. Step 3: Cross multiply
    84,937.92x = 127,495.37 × 83,031.78
  4. Step 4: Simplify right side
    84,937.92x = 10,586,167,731.49
  5. Step 5: Solve for x
    x = 10,586,167,731.49/84,937.92
  6. Step 6: Final answer
    x = 124,634.18

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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.