Home / 72,470.10-108,705.15-47,100.90

Finding the Fourth Proportional to 72,470.10, 108,705.15 and 47,100.90

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Solution

The fourth proportional to 72,470.10, 108,705.15 and 47,100.90 is: 70,651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,470.10 : 108,705.15 = 47,100.90 : x
  2. Step 2: Convert to fraction form
    72,470.10/108,705.15 = 47,100.90/x
  3. Step 3: Cross multiply
    72,470.10x = 108,705.15 × 47,100.90
  4. Step 4: Simplify right side
    72,470.10x = 5,120,110,399.64
  5. Step 5: Solve for x
    x = 5,120,110,399.64/72,470.10
  6. Step 6: Final answer
    x = 70,651.35

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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.