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Finding the Fourth Proportional to 34,948.76, 52,419.48 and 9,987.20

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Solution

The fourth proportional to 34,948.76, 52,419.48 and 9,987.20 is: 14,979.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,948.76 : 52,419.48 = 9,987.20 : x
  2. Step 2: Convert to fraction form
    34,948.76/52,419.48 = 9,987.20/x
  3. Step 3: Cross multiply
    34,948.76x = 52,419.48 × 9,987.20
  4. Step 4: Simplify right side
    34,948.76x = 523,523,568.56
  5. Step 5: Solve for x
    x = 523,523,568.56/34,948.76
  6. Step 6: Final answer
    x = 14,979.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.