Home / 49,378.40-74,067.60-12,442.40

Finding the Fourth Proportional to 49,378.40, 74,067.60 and 12,442.40

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Solution

The fourth proportional to 49,378.40, 74,067.60 and 12,442.40 is: 18,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,378.40 : 74,067.60 = 12,442.40 : x
  2. Step 2: Convert to fraction form
    49,378.40/74,067.60 = 12,442.40/x
  3. Step 3: Cross multiply
    49,378.40x = 74,067.60 × 12,442.40
  4. Step 4: Simplify right side
    49,378.40x = 921,578,706.24
  5. Step 5: Solve for x
    x = 921,578,706.24/49,378.40
  6. Step 6: Final answer
    x = 18,663.60

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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.