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Finding the Fourth Proportional to 99,596.42, 137,439.54 and 55,987.64

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Solution

The fourth proportional to 99,596.42, 137,439.54 and 55,987.64 is: 77,260.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,596.42 : 137,439.54 = 55,987.64 : x
  2. Step 2: Convert to fraction form
    99,596.42/137,439.54 = 55,987.64/x
  3. Step 3: Cross multiply
    99,596.42x = 137,439.54 × 55,987.64
  4. Step 4: Simplify right side
    99,596.42x = 7,694,915,487.29
  5. Step 5: Solve for x
    x = 7,694,915,487.29/99,596.42
  6. Step 6: Final answer
    x = 77,260.96

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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.