Home / 81,922.60-113,026.15-66,789.25

Finding the Fourth Proportional to 81,922.60, 113,026.15 and 66,789.25

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Solution

The fourth proportional to 81,922.60, 113,026.15 and 66,789.25 is: 92,147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,922.60 : 113,026.15 = 66,789.25 : x
  2. Step 2: Convert to fraction form
    81,922.60/113,026.15 = 66,789.25/x
  3. Step 3: Cross multiply
    81,922.60x = 113,026.15 × 66,789.25
  4. Step 4: Simplify right side
    81,922.60x = 7,548,931,788.89
  5. Step 5: Solve for x
    x = 7,548,931,788.89/81,922.60
  6. Step 6: Final answer
    x = 92,147.12

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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.