Home / 49,387.20-74,023.20-19,790.40

Finding the Fourth Proportional to 49,387.20, 74,023.20 and 19,790.40

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Solution

The fourth proportional to 49,387.20, 74,023.20 and 19,790.40 is: 29,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,387.20 : 74,023.20 = 19,790.40 : x
  2. Step 2: Convert to fraction form
    49,387.20/74,023.20 = 19,790.40/x
  3. Step 3: Cross multiply
    49,387.20x = 74,023.20 × 19,790.40
  4. Step 4: Simplify right side
    49,387.20x = 1,464,948,737.28
  5. Step 5: Solve for x
    x = 1,464,948,737.28/49,387.20
  6. Step 6: Final answer
    x = 29,662.52

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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.