Home / 72,302.24-107,972.20-71,520.32

Finding the Fourth Proportional to 72,302.24, 107,972.20 and 71,520.32

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Solution

The fourth proportional to 72,302.24, 107,972.20 and 71,520.32 is: 106,804.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,302.24 : 107,972.20 = 71,520.32 : x
  2. Step 2: Convert to fraction form
    72,302.24/107,972.20 = 71,520.32/x
  3. Step 3: Cross multiply
    72,302.24x = 107,972.20 × 71,520.32
  4. Step 4: Simplify right side
    72,302.24x = 7,722,206,295.10
  5. Step 5: Solve for x
    x = 7,722,206,295.10/72,302.24
  6. Step 6: Final answer
    x = 106,804.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.