Home / 88,421.72-122,020.70-48,135.78

Finding the Fourth Proportional to 88,421.72, 122,020.70 and 48,135.78

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Solution

The fourth proportional to 88,421.72, 122,020.70 and 48,135.78 is: 66,426.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,421.72 : 122,020.70 = 48,135.78 : x
  2. Step 2: Convert to fraction form
    88,421.72/122,020.70 = 48,135.78/x
  3. Step 3: Cross multiply
    88,421.72x = 122,020.70 × 48,135.78
  4. Step 4: Simplify right side
    88,421.72x = 5,873,561,329.97
  5. Step 5: Solve for x
    x = 5,873,561,329.97/88,421.72
  6. Step 6: Final answer
    x = 66,426.68

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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.