Home / 81,062.19-121,591.85-25,656.75

Finding the Fourth Proportional to 81,062.19, 121,591.85 and 25,656.75

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Solution

The fourth proportional to 81,062.19, 121,591.85 and 25,656.75 is: 38,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,062.19 : 121,591.85 = 25,656.75 : x
  2. Step 2: Convert to fraction form
    81,062.19/121,591.85 = 25,656.75/x
  3. Step 3: Cross multiply
    81,062.19x = 121,591.85 × 25,656.75
  4. Step 4: Simplify right side
    81,062.19x = 3,119,651,569.20
  5. Step 5: Solve for x
    x = 3,119,651,569.20/81,062.19
  6. Step 6: Final answer
    x = 38,484.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.