Home / 71,749.06-99,013.69-39,917.95

Finding the Fourth Proportional to 71,749.06, 99,013.69 and 39,917.95

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Solution

The fourth proportional to 71,749.06, 99,013.69 and 39,917.95 is: 55,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,749.06 : 99,013.69 = 39,917.95 : x
  2. Step 2: Convert to fraction form
    71,749.06/99,013.69 = 39,917.95/x
  3. Step 3: Cross multiply
    71,749.06x = 99,013.69 × 39,917.95
  4. Step 4: Simplify right side
    71,749.06x = 3,952,423,526.74
  5. Step 5: Solve for x
    x = 3,952,423,526.74/71,749.06
  6. Step 6: Final answer
    x = 55,086.76

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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.