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Finding the Fourth Proportional to 71,378.84, 98,499.90 and 39,549.08

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Solution

The fourth proportional to 71,378.84, 98,499.90 and 39,549.08 is: 54,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,378.84 : 98,499.90 = 39,549.08 : x
  2. Step 2: Convert to fraction form
    71,378.84/98,499.90 = 39,549.08/x
  3. Step 3: Cross multiply
    71,378.84x = 98,499.90 × 39,549.08
  4. Step 4: Simplify right side
    71,378.84x = 3,895,580,425.09
  5. Step 5: Solve for x
    x = 3,895,580,425.09/71,378.84
  6. Step 6: Final answer
    x = 54,576.12

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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.