Home / 49,785.20-74,620.20-20,188.40

Finding the Fourth Proportional to 49,785.20, 74,620.20 and 20,188.40

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Solution

The fourth proportional to 49,785.20, 74,620.20 and 20,188.40 is: 30,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,785.20 : 74,620.20 = 20,188.40 : x
  2. Step 2: Convert to fraction form
    49,785.20/74,620.20 = 20,188.40/x
  3. Step 3: Cross multiply
    49,785.20x = 74,620.20 × 20,188.40
  4. Step 4: Simplify right side
    49,785.20x = 1,506,462,445.68
  5. Step 5: Solve for x
    x = 1,506,462,445.68/49,785.20
  6. Step 6: Final answer
    x = 30,259.24

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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.