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Finding the Fourth Proportional to 86,993.65, 130,503.43 and 40,251.25

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Solution

The fourth proportional to 86,993.65, 130,503.43 and 40,251.25 is: 60,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,993.65 : 130,503.43 = 40,251.25 : x
  2. Step 2: Convert to fraction form
    86,993.65/130,503.43 = 40,251.25/x
  3. Step 3: Cross multiply
    86,993.65x = 130,503.43 × 40,251.25
  4. Step 4: Simplify right side
    86,993.65x = 5,252,925,534.27
  5. Step 5: Solve for x
    x = 5,252,925,534.27/86,993.65
  6. Step 6: Final answer
    x = 60,382.87

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1.5x scale

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.