Home / 98,254.62-135,585.45-57,981

Finding the Fourth Proportional to 98,254.62, 135,585.45 and 57,981

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Solution

The fourth proportional to 98,254.62, 135,585.45 and 57,981 is: 80,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,254.62 : 135,585.45 = 57,981 : x
  2. Step 2: Convert to fraction form
    98,254.62/135,585.45 = 57,981/x
  3. Step 3: Cross multiply
    98,254.62x = 135,585.45 × 57,981
  4. Step 4: Simplify right side
    98,254.62x = 7,861,379,976.45
  5. Step 5: Solve for x
    x = 7,861,379,976.45/98,254.62
  6. Step 6: Final answer
    x = 80,010.28

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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.