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Finding the Fourth Proportional to 90,473.56, 124,823.64 and 54,649.96

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Solution

The fourth proportional to 90,473.56, 124,823.64 and 54,649.96 is: 75,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,473.56 : 124,823.64 = 54,649.96 : x
  2. Step 2: Convert to fraction form
    90,473.56/124,823.64 = 54,649.96/x
  3. Step 3: Cross multiply
    90,473.56x = 124,823.64 × 54,649.96
  4. Step 4: Simplify right side
    90,473.56x = 6,821,606,933.05
  5. Step 5: Solve for x
    x = 6,821,606,933.05/90,473.56
  6. Step 6: Final answer
    x = 75,398.90

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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.