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Finding the Fourth Proportional to 61,240.70, 91,763.85 and 40,439.90

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Solution

The fourth proportional to 61,240.70, 91,763.85 and 40,439.90 is: 60,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,240.70 : 91,763.85 = 40,439.90 : x
  2. Step 2: Convert to fraction form
    61,240.70/91,763.85 = 40,439.90/x
  3. Step 3: Cross multiply
    61,240.70x = 91,763.85 × 40,439.90
  4. Step 4: Simplify right side
    61,240.70x = 3,710,920,917.62
  5. Step 5: Solve for x
    x = 3,710,920,917.62/61,240.70
  6. Step 6: Final answer
    x = 60,595.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.