Home / 80,763.40-121,145.10-49,616.20

Finding the Fourth Proportional to 80,763.40, 121,145.10 and 49,616.20

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Solution

The fourth proportional to 80,763.40, 121,145.10 and 49,616.20 is: 74,424.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,763.40 : 121,145.10 = 49,616.20 : x
  2. Step 2: Convert to fraction form
    80,763.40/121,145.10 = 49,616.20/x
  3. Step 3: Cross multiply
    80,763.40x = 121,145.10 × 49,616.20
  4. Step 4: Simplify right side
    80,763.40x = 6,010,759,510.62
  5. Step 5: Solve for x
    x = 6,010,759,510.62/80,763.40
  6. Step 6: Final answer
    x = 74,424.30

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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.