Home / 81,292.41-111,934.31-71,164.17

Finding the Fourth Proportional to 81,292.41, 111,934.31 and 71,164.17

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Solution

The fourth proportional to 81,292.41, 111,934.31 and 71,164.17 is: 97,988.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,292.41 : 111,934.31 = 71,164.17 : x
  2. Step 2: Convert to fraction form
    81,292.41/111,934.31 = 71,164.17/x
  3. Step 3: Cross multiply
    81,292.41x = 111,934.31 × 71,164.17
  4. Step 4: Simplify right side
    81,292.41x = 7,965,711,909.85
  5. Step 5: Solve for x
    x = 7,965,711,909.85/81,292.41
  6. Step 6: Final answer
    x = 97,988.38

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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.