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Finding the Fourth Proportional to 99,559.65, 137,392.31 and 54,847.65

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Solution

The fourth proportional to 99,559.65, 137,392.31 and 54,847.65 is: 75,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,559.65 : 137,392.31 = 54,847.65 : x
  2. Step 2: Convert to fraction form
    99,559.65/137,392.31 = 54,847.65/x
  3. Step 3: Cross multiply
    99,559.65x = 137,392.31 × 54,847.65
  4. Step 4: Simplify right side
    99,559.65x = 7,535,645,331.57
  5. Step 5: Solve for x
    x = 7,535,645,331.57/99,559.65
  6. Step 6: Final answer
    x = 75,689.75

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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.