Home / 77,981.04-107,613.76-42,170.96

Finding the Fourth Proportional to 77,981.04, 107,613.76 and 42,170.96

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Solution

The fourth proportional to 77,981.04, 107,613.76 and 42,170.96 is: 58,195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,981.04 : 107,613.76 = 42,170.96 : x
  2. Step 2: Convert to fraction form
    77,981.04/107,613.76 = 42,170.96/x
  3. Step 3: Cross multiply
    77,981.04x = 107,613.76 × 42,170.96
  4. Step 4: Simplify right side
    77,981.04x = 4,538,175,568.41
  5. Step 5: Solve for x
    x = 4,538,175,568.41/77,981.04
  6. Step 6: Final answer
    x = 58,195.88

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1.5x scale

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.