Home / 83,600.49-115,422.72-51,803.13

Finding the Fourth Proportional to 83,600.49, 115,422.72 and 51,803.13

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Solution

The fourth proportional to 83,600.49, 115,422.72 and 51,803.13 is: 71,521.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,600.49 : 115,422.72 = 51,803.13 : x
  2. Step 2: Convert to fraction form
    83,600.49/115,422.72 = 51,803.13/x
  3. Step 3: Cross multiply
    83,600.49x = 115,422.72 × 51,803.13
  4. Step 4: Simplify right side
    83,600.49x = 5,979,258,169.11
  5. Step 5: Solve for x
    x = 5,979,258,169.11/83,600.49
  6. Step 6: Final answer
    x = 71,521.81

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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.