Home / 80,818.85-121,220.65-38,114.37

Finding the Fourth Proportional to 80,818.85, 121,220.65 and 38,114.37

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Solution

The fourth proportional to 80,818.85, 121,220.65 and 38,114.37 is: 57,167.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,818.85 : 121,220.65 = 38,114.37 : x
  2. Step 2: Convert to fraction form
    80,818.85/121,220.65 = 38,114.37/x
  3. Step 3: Cross multiply
    80,818.85x = 121,220.65 × 38,114.37
  4. Step 4: Simplify right side
    80,818.85x = 4,620,248,705.74
  5. Step 5: Solve for x
    x = 4,620,248,705.74/80,818.85
  6. Step 6: Final answer
    x = 57,167.96

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1.5x scale

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.