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Finding the Fourth Proportional to 90,545.78, 124,939.86 and 50,259.84

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Solution

The fourth proportional to 90,545.78, 124,939.86 and 50,259.84 is: 69,351.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,545.78 : 124,939.86 = 50,259.84 : x
  2. Step 2: Convert to fraction form
    90,545.78/124,939.86 = 50,259.84/x
  3. Step 3: Cross multiply
    90,545.78x = 124,939.86 × 50,259.84
  4. Step 4: Simplify right side
    90,545.78x = 6,279,457,373.22
  5. Step 5: Solve for x
    x = 6,279,457,373.22/90,545.78
  6. Step 6: Final answer
    x = 69,351.19

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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.