Home / 71,680.96-98,908.56-39,849.76

Finding the Fourth Proportional to 71,680.96, 98,908.56 and 39,849.76

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Solution

The fourth proportional to 71,680.96, 98,908.56 and 39,849.76 is: 54,986.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,680.96 : 98,908.56 = 39,849.76 : x
  2. Step 2: Convert to fraction form
    71,680.96/98,908.56 = 39,849.76/x
  3. Step 3: Cross multiply
    71,680.96x = 98,908.56 × 39,849.76
  4. Step 4: Simplify right side
    71,680.96x = 3,941,482,377.95
  5. Step 5: Solve for x
    x = 3,941,482,377.95/71,680.96
  6. Step 6: Final answer
    x = 54,986.46

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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.