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Finding the Fourth Proportional to 57,482.63, 79,327.54 and 31,990.71

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Solution

The fourth proportional to 57,482.63, 79,327.54 and 31,990.71 is: 44,148.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,482.63 : 79,327.54 = 31,990.71 : x
  2. Step 2: Convert to fraction form
    57,482.63/79,327.54 = 31,990.71/x
  3. Step 3: Cross multiply
    57,482.63x = 79,327.54 × 31,990.71
  4. Step 4: Simplify right side
    57,482.63x = 2,537,744,167.20
  5. Step 5: Solve for x
    x = 2,537,744,167.20/57,482.63
  6. Step 6: Final answer
    x = 44,148.02

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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.