Home / 52,078.28-78,117.40-12,635.04

Finding the Fourth Proportional to 52,078.28, 78,117.40 and 12,635.04

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Solution

The fourth proportional to 52,078.28, 78,117.40 and 12,635.04 is: 18,952.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,078.28 : 78,117.40 = 12,635.04 : x
  2. Step 2: Convert to fraction form
    52,078.28/78,117.40 = 12,635.04/x
  3. Step 3: Cross multiply
    52,078.28x = 78,117.40 × 12,635.04
  4. Step 4: Simplify right side
    52,078.28x = 987,016,473.70
  5. Step 5: Solve for x
    x = 987,016,473.70/52,078.28
  6. Step 6: Final answer
    x = 18,952.56

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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.