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Finding the Fourth Proportional to 61,687.62, 85,124.25 and 34,826.40

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Solution

The fourth proportional to 61,687.62, 85,124.25 and 34,826.40 is: 48,057.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,687.62 : 85,124.25 = 34,826.40 : x
  2. Step 2: Convert to fraction form
    61,687.62/85,124.25 = 34,826.40/x
  3. Step 3: Cross multiply
    61,687.62x = 85,124.25 × 34,826.40
  4. Step 4: Simplify right side
    61,687.62x = 2,964,571,180.20
  5. Step 5: Solve for x
    x = 2,964,571,180.20/61,687.62
  6. Step 6: Final answer
    x = 48,057.80

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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.