Home / 81,830.17-112,793.97-61,100.15

Finding the Fourth Proportional to 81,830.17, 112,793.97 and 61,100.15

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Solution

The fourth proportional to 81,830.17, 112,793.97 and 61,100.15 is: 84,219.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,830.17 : 112,793.97 = 61,100.15 : x
  2. Step 2: Convert to fraction form
    81,830.17/112,793.97 = 61,100.15/x
  3. Step 3: Cross multiply
    81,830.17x = 112,793.97 × 61,100.15
  4. Step 4: Simplify right side
    81,830.17x = 6,891,727,922.13
  5. Step 5: Solve for x
    x = 6,891,727,922.13/81,830.17
  6. Step 6: Final answer
    x = 84,219.89

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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.