Home / 71,748.18-99,012.49-39,917.07

Finding the Fourth Proportional to 71,748.18, 99,012.49 and 39,917.07

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Solution

The fourth proportional to 71,748.18, 99,012.49 and 39,917.07 is: 55,085.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,748.18 : 99,012.49 = 39,917.07 : x
  2. Step 2: Convert to fraction form
    71,748.18/99,012.49 = 39,917.07/x
  3. Step 3: Cross multiply
    71,748.18x = 99,012.49 × 39,917.07
  4. Step 4: Simplify right side
    71,748.18x = 3,952,288,394.41
  5. Step 5: Solve for x
    x = 3,952,288,394.41/71,748.18
  6. Step 6: Final answer
    x = 55,085.56

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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.