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Finding the Fourth Proportional to 69,978.75, 96,605.15 and 48,484.79

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Solution

The fourth proportional to 69,978.75, 96,605.15 and 48,484.79 is: 66,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,978.75 : 96,605.15 = 48,484.79 : x
  2. Step 2: Convert to fraction form
    69,978.75/96,605.15 = 48,484.79/x
  3. Step 3: Cross multiply
    69,978.75x = 96,605.15 × 48,484.79
  4. Step 4: Simplify right side
    69,978.75x = 4,683,880,773.39
  5. Step 5: Solve for x
    x = 4,683,880,773.39/69,978.75
  6. Step 6: Final answer
    x = 66,932.90

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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.