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Finding the Fourth Proportional to 38,290.54, 57,291.54 and 34,405.78

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Solution

The fourth proportional to 38,290.54, 57,291.54 and 34,405.78 is: 51,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,290.54 : 57,291.54 = 34,405.78 : x
  2. Step 2: Convert to fraction form
    38,290.54/57,291.54 = 34,405.78/x
  3. Step 3: Cross multiply
    38,290.54x = 57,291.54 × 34,405.78
  4. Step 4: Simplify right side
    38,290.54x = 1,971,160,121.10
  5. Step 5: Solve for x
    x = 1,971,160,121.10/38,290.54
  6. Step 6: Final answer
    x = 51,479.04

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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.