Home / 80,586.28-120,902.10-28,001.08

Finding the Fourth Proportional to 80,586.28, 120,902.10 and 28,001.08

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Solution

The fourth proportional to 80,586.28, 120,902.10 and 28,001.08 is: 42,009.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,586.28 : 120,902.10 = 28,001.08 : x
  2. Step 2: Convert to fraction form
    80,586.28/120,902.10 = 28,001.08/x
  3. Step 3: Cross multiply
    80,586.28x = 120,902.10 × 28,001.08
  4. Step 4: Simplify right side
    80,586.28x = 3,385,389,374.27
  5. Step 5: Solve for x
    x = 3,385,389,374.27/80,586.28
  6. Step 6: Final answer
    x = 42,009.50

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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.