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Finding the Fourth Proportional to 61,825.20, 85,219.20 and 48,374.88

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Solution

The fourth proportional to 61,825.20, 85,219.20 and 48,374.88 is: 66,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,825.20 : 85,219.20 = 48,374.88 : x
  2. Step 2: Convert to fraction form
    61,825.20/85,219.20 = 48,374.88/x
  3. Step 3: Cross multiply
    61,825.20x = 85,219.20 × 48,374.88
  4. Step 4: Simplify right side
    61,825.20x = 4,122,468,573.70
  5. Step 5: Solve for x
    x = 4,122,468,573.70/61,825.20
  6. Step 6: Final answer
    x = 66,679.42

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1.5x scale

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.