Home / 80,525.20-120,643.80-38,880.40

Finding the Fourth Proportional to 80,525.20, 120,643.80 and 38,880.40

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Solution

The fourth proportional to 80,525.20, 120,643.80 and 38,880.40 is: 58,251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,525.20 : 120,643.80 = 38,880.40 : x
  2. Step 2: Convert to fraction form
    80,525.20/120,643.80 = 38,880.40/x
  3. Step 3: Cross multiply
    80,525.20x = 120,643.80 × 38,880.40
  4. Step 4: Simplify right side
    80,525.20x = 4,690,679,201.52
  5. Step 5: Solve for x
    x = 4,690,679,201.52/80,525.20
  6. Step 6: Final answer
    x = 58,251.07

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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.