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Finding the Fourth Proportional to 57,392.40, 79,174.18 and 38,281

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Solution

The fourth proportional to 57,392.40, 79,174.18 and 38,281 is: 52,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,392.40 : 79,174.18 = 38,281 : x
  2. Step 2: Convert to fraction form
    57,392.40/79,174.18 = 38,281/x
  3. Step 3: Cross multiply
    57,392.40x = 79,174.18 × 38,281
  4. Step 4: Simplify right side
    57,392.40x = 3,030,866,784.58
  5. Step 5: Solve for x
    x = 3,030,866,784.58/57,392.40
  6. Step 6: Final answer
    x = 52,809.55

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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.