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Finding the Fourth Proportional to 61,978.61, 85,531.07 and 36,823.25

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Solution

The fourth proportional to 61,978.61, 85,531.07 and 36,823.25 is: 50,816.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,978.61 : 85,531.07 = 36,823.25 : x
  2. Step 2: Convert to fraction form
    61,978.61/85,531.07 = 36,823.25/x
  3. Step 3: Cross multiply
    61,978.61x = 85,531.07 × 36,823.25
  4. Step 4: Simplify right side
    61,978.61x = 3,149,531,973.38
  5. Step 5: Solve for x
    x = 3,149,531,973.38/61,978.61
  6. Step 6: Final answer
    x = 50,816.43

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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.