Home / 83,108.40-124,703.10-38,712.30

Finding the Fourth Proportional to 83,108.40, 124,703.10 and 38,712.30

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Solution

The fourth proportional to 83,108.40, 124,703.10 and 38,712.30 is: 58,087.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,108.40 : 124,703.10 = 38,712.30 : x
  2. Step 2: Convert to fraction form
    83,108.40/124,703.10 = 38,712.30/x
  3. Step 3: Cross multiply
    83,108.40x = 124,703.10 × 38,712.30
  4. Step 4: Simplify right side
    83,108.40x = 4,827,543,818.13
  5. Step 5: Solve for x
    x = 4,827,543,818.13/83,108.40
  6. Step 6: Final answer
    x = 58,087.32

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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.