Home / 71,551.56-98,740.42-39,719.64

Finding the Fourth Proportional to 71,551.56, 98,740.42 and 39,719.64

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Solution

The fourth proportional to 71,551.56, 98,740.42 and 39,719.64 is: 54,812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,551.56 : 98,740.42 = 39,719.64 : x
  2. Step 2: Convert to fraction form
    71,551.56/98,740.42 = 39,719.64/x
  3. Step 3: Cross multiply
    71,551.56x = 98,740.42 × 39,719.64
  4. Step 4: Simplify right side
    71,551.56x = 3,921,933,935.85
  5. Step 5: Solve for x
    x = 3,921,933,935.85/71,551.56
  6. Step 6: Final answer
    x = 54,812.70

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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.