Home / 72,206.54-99,645.04-40,375.52

Finding the Fourth Proportional to 72,206.54, 99,645.04 and 40,375.52

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Solution

The fourth proportional to 72,206.54, 99,645.04 and 40,375.52 is: 55,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,206.54 : 99,645.04 = 40,375.52 : x
  2. Step 2: Convert to fraction form
    72,206.54/99,645.04 = 40,375.52/x
  3. Step 3: Cross multiply
    72,206.54x = 99,645.04 × 40,375.52
  4. Step 4: Simplify right side
    72,206.54x = 4,023,220,305.42
  5. Step 5: Solve for x
    x = 4,023,220,305.42/72,206.54
  6. Step 6: Final answer
    x = 55,718.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.