Home / 87,779.25-121,135.29-49,546.85

Finding the Fourth Proportional to 87,779.25, 121,135.29 and 49,546.85

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Solution

The fourth proportional to 87,779.25, 121,135.29 and 49,546.85 is: 68,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.25 : 121,135.29 = 49,546.85 : x
  2. Step 2: Convert to fraction form
    87,779.25/121,135.29 = 49,546.85/x
  3. Step 3: Cross multiply
    87,779.25x = 121,135.29 × 49,546.85
  4. Step 4: Simplify right side
    87,779.25x = 6,001,871,437.66
  5. Step 5: Solve for x
    x = 6,001,871,437.66/87,779.25
  6. Step 6: Final answer
    x = 68,374.60

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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.