Home / 77,113.62-115,736.04-54,981.18

Finding the Fourth Proportional to 77,113.62, 115,736.04 and 54,981.18

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Solution

The fourth proportional to 77,113.62, 115,736.04 and 54,981.18 is: 82,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,113.62 : 115,736.04 = 54,981.18 : x
  2. Step 2: Convert to fraction form
    77,113.62/115,736.04 = 54,981.18/x
  3. Step 3: Cross multiply
    77,113.62x = 115,736.04 × 54,981.18
  4. Step 4: Simplify right side
    77,113.62x = 6,363,304,047.73
  5. Step 5: Solve for x
    x = 6,363,304,047.73/77,113.62
  6. Step 6: Final answer
    x = 82,518.55

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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.