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Finding the Fourth Proportional to 94,939.87, 142,479.90 and 45,020.13

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Solution

The fourth proportional to 94,939.87, 142,479.90 and 45,020.13 is: 67,563.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,939.87 : 142,479.90 = 45,020.13 : x
  2. Step 2: Convert to fraction form
    94,939.87/142,479.90 = 45,020.13/x
  3. Step 3: Cross multiply
    94,939.87x = 142,479.90 × 45,020.13
  4. Step 4: Simplify right side
    94,939.87x = 6,414,463,810.08
  5. Step 5: Solve for x
    x = 6,414,463,810.08/94,939.87
  6. Step 6: Final answer
    x = 67,563.44

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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.