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Finding the Fourth Proportional to 86,963.44, 120,012.40 and 49,236.88

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Solution

The fourth proportional to 86,963.44, 120,012.40 and 49,236.88 is: 67,948.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,963.44 : 120,012.40 = 49,236.88 : x
  2. Step 2: Convert to fraction form
    86,963.44/120,012.40 = 49,236.88/x
  3. Step 3: Cross multiply
    86,963.44x = 120,012.40 × 49,236.88
  4. Step 4: Simplify right side
    86,963.44x = 5,909,036,137.31
  5. Step 5: Solve for x
    x = 5,909,036,137.31/86,963.44
  6. Step 6: Final answer
    x = 67,948.51

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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.