Home / 80,861.40-121,292.10-63,948.60

Finding the Fourth Proportional to 80,861.40, 121,292.10 and 63,948.60

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Solution

The fourth proportional to 80,861.40, 121,292.10 and 63,948.60 is: 95,922.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,861.40 : 121,292.10 = 63,948.60 : x
  2. Step 2: Convert to fraction form
    80,861.40/121,292.10 = 63,948.60/x
  3. Step 3: Cross multiply
    80,861.40x = 121,292.10 × 63,948.60
  4. Step 4: Simplify right side
    80,861.40x = 7,756,459,986.06
  5. Step 5: Solve for x
    x = 7,756,459,986.06/80,861.40
  6. Step 6: Final answer
    x = 95,922.90

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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.