Home / 71,554.20-98,740.92-39,721.05

Finding the Fourth Proportional to 71,554.20, 98,740.92 and 39,721.05

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Solution

The fourth proportional to 71,554.20, 98,740.92 and 39,721.05 is: 54,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,554.20 : 98,740.92 = 39,721.05 : x
  2. Step 2: Convert to fraction form
    71,554.20/98,740.92 = 39,721.05/x
  3. Step 3: Cross multiply
    71,554.20x = 98,740.92 × 39,721.05
  4. Step 4: Simplify right side
    71,554.20x = 3,922,093,020.37
  5. Step 5: Solve for x
    x = 3,922,093,020.37/71,554.20
  6. Step 6: Final answer
    x = 54,812.90

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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.