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Finding the Fourth Proportional to 90,326.70, 124,649.16 and 54,518.22

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Solution

The fourth proportional to 90,326.70, 124,649.16 and 54,518.22 is: 75,234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,326.70 : 124,649.16 = 54,518.22 : x
  2. Step 2: Convert to fraction form
    90,326.70/124,649.16 = 54,518.22/x
  3. Step 3: Cross multiply
    90,326.70x = 124,649.16 × 54,518.22
  4. Step 4: Simplify right side
    90,326.70x = 6,795,650,327.70
  5. Step 5: Solve for x
    x = 6,795,650,327.70/90,326.70
  6. Step 6: Final answer
    x = 75,234.13

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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.