Home / 72,174.03-99,596.13-39,906.78

Finding the Fourth Proportional to 72,174.03, 99,596.13 and 39,906.78

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Solution

The fourth proportional to 72,174.03, 99,596.13 and 39,906.78 is: 55,069.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174.03 : 99,596.13 = 39,906.78 : x
  2. Step 2: Convert to fraction form
    72,174.03/99,596.13 = 39,906.78/x
  3. Step 3: Cross multiply
    72,174.03x = 99,596.13 × 39,906.78
  4. Step 4: Simplify right side
    72,174.03x = 3,974,560,848.76
  5. Step 5: Solve for x
    x = 3,974,560,848.76/72,174.03
  6. Step 6: Final answer
    x = 55,069.13

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1.5x scale

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.