Home / 90,218.72-124,502.10-49,935.28

Finding the Fourth Proportional to 90,218.72, 124,502.10 and 49,935.28

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Solution

The fourth proportional to 90,218.72, 124,502.10 and 49,935.28 is: 68,910.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,218.72 : 124,502.10 = 49,935.28 : x
  2. Step 2: Convert to fraction form
    90,218.72/124,502.10 = 49,935.28/x
  3. Step 3: Cross multiply
    90,218.72x = 124,502.10 × 49,935.28
  4. Step 4: Simplify right side
    90,218.72x = 6,217,047,224.09
  5. Step 5: Solve for x
    x = 6,217,047,224.09/90,218.72
  6. Step 6: Final answer
    x = 68,910.83

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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.