Home / 80,897.40-121,346.10-55,884.60

Finding the Fourth Proportional to 80,897.40, 121,346.10 and 55,884.60

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Solution

The fourth proportional to 80,897.40, 121,346.10 and 55,884.60 is: 83,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,897.40 : 121,346.10 = 55,884.60 : x
  2. Step 2: Convert to fraction form
    80,897.40/121,346.10 = 55,884.60/x
  3. Step 3: Cross multiply
    80,897.40x = 121,346.10 × 55,884.60
  4. Step 4: Simplify right side
    80,897.40x = 6,781,378,260.06
  5. Step 5: Solve for x
    x = 6,781,378,260.06/80,897.40
  6. Step 6: Final answer
    x = 83,826.90

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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.