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Finding the Fourth Proportional to 38,161.67, 52,707.49 and 30,531.40

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Solution

The fourth proportional to 38,161.67, 52,707.49 and 30,531.40 is: 42,168.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,161.67 : 52,707.49 = 30,531.40 : x
  2. Step 2: Convert to fraction form
    38,161.67/52,707.49 = 30,531.40/x
  3. Step 3: Cross multiply
    38,161.67x = 52,707.49 × 30,531.40
  4. Step 4: Simplify right side
    38,161.67x = 1,609,233,252.09
  5. Step 5: Solve for x
    x = 1,609,233,252.09/38,161.67
  6. Step 6: Final answer
    x = 42,168.84

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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.