Home / 71,557.08-98,747.28-39,724.08

Finding the Fourth Proportional to 71,557.08, 98,747.28 and 39,724.08

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Solution

The fourth proportional to 71,557.08, 98,747.28 and 39,724.08 is: 54,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,557.08 : 98,747.28 = 39,724.08 : x
  2. Step 2: Convert to fraction form
    71,557.08/98,747.28 = 39,724.08/x
  3. Step 3: Cross multiply
    71,557.08x = 98,747.28 × 39,724.08
  4. Step 4: Simplify right side
    71,557.08x = 3,922,644,850.50
  5. Step 5: Solve for x
    x = 3,922,644,850.50/71,557.08
  6. Step 6: Final answer
    x = 54,818.40

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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.