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Finding the Fourth Proportional to 70,872.60, 97,839.18 and 48,328.68

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Solution

The fourth proportional to 70,872.60, 97,839.18 and 48,328.68 is: 66,717.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,872.60 : 97,839.18 = 48,328.68 : x
  2. Step 2: Convert to fraction form
    70,872.60/97,839.18 = 48,328.68/x
  3. Step 3: Cross multiply
    70,872.60x = 97,839.18 × 48,328.68
  4. Step 4: Simplify right side
    70,872.60x = 4,728,438,421.68
  5. Step 5: Solve for x
    x = 4,728,438,421.68/70,872.60
  6. Step 6: Final answer
    x = 66,717.44

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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.