Home / 80,977.70-121,430.10-36,581.60

Finding the Fourth Proportional to 80,977.70, 121,430.10 and 36,581.60

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Solution

The fourth proportional to 80,977.70, 121,430.10 and 36,581.60 is: 54,855.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,977.70 : 121,430.10 = 36,581.60 : x
  2. Step 2: Convert to fraction form
    80,977.70/121,430.10 = 36,581.60/x
  3. Step 3: Cross multiply
    80,977.70x = 121,430.10 × 36,581.60
  4. Step 4: Simplify right side
    80,977.70x = 4,442,107,346.16
  5. Step 5: Solve for x
    x = 4,442,107,346.16/80,977.70
  6. Step 6: Final answer
    x = 54,855.93

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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.