Home / 90,079.12-124,321.53-51,837.88

Finding the Fourth Proportional to 90,079.12, 124,321.53 and 51,837.88

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Solution

The fourth proportional to 90,079.12, 124,321.53 and 51,837.88 is: 71,543.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,079.12 : 124,321.53 = 51,837.88 : x
  2. Step 2: Convert to fraction form
    90,079.12/124,321.53 = 51,837.88/x
  3. Step 3: Cross multiply
    90,079.12x = 124,321.53 × 51,837.88
  4. Step 4: Simplify right side
    90,079.12x = 6,444,564,553.56
  5. Step 5: Solve for x
    x = 6,444,564,553.56/90,079.12
  6. Step 6: Final answer
    x = 71,543.38

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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.