Home / 80,587.28-120,903.60-28,002.08

Finding the Fourth Proportional to 80,587.28, 120,903.60 and 28,002.08

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Solution

The fourth proportional to 80,587.28, 120,903.60 and 28,002.08 is: 42,011.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,587.28 : 120,903.60 = 28,002.08 : x
  2. Step 2: Convert to fraction form
    80,587.28/120,903.60 = 28,002.08/x
  3. Step 3: Cross multiply
    80,587.28x = 120,903.60 × 28,002.08
  4. Step 4: Simplify right side
    80,587.28x = 3,385,552,279.49
  5. Step 5: Solve for x
    x = 3,385,552,279.49/80,587.28
  6. Step 6: Final answer
    x = 42,011.00

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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.