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Finding the Fourth Proportional to 61,764.80, 85,239.74 and 34,909.79

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Solution

The fourth proportional to 61,764.80, 85,239.74 and 34,909.79 is: 48,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,764.80 : 85,239.74 = 34,909.79 : x
  2. Step 2: Convert to fraction form
    61,764.80/85,239.74 = 34,909.79/x
  3. Step 3: Cross multiply
    61,764.80x = 85,239.74 × 34,909.79
  4. Step 4: Simplify right side
    61,764.80x = 2,975,701,084.13
  5. Step 5: Solve for x
    x = 2,975,701,084.13/61,764.80
  6. Step 6: Final answer
    x = 48,177.95

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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.