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Finding the Fourth Proportional to 57,354.95, 79,162.49 and 31,870.07

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Solution

The fourth proportional to 57,354.95, 79,162.49 and 31,870.07 is: 43,987.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,354.95 : 79,162.49 = 31,870.07 : x
  2. Step 2: Convert to fraction form
    57,354.95/79,162.49 = 31,870.07/x
  3. Step 3: Cross multiply
    57,354.95x = 79,162.49 × 31,870.07
  4. Step 4: Simplify right side
    57,354.95x = 2,522,913,938.32
  5. Step 5: Solve for x
    x = 2,522,913,938.32/57,354.95
  6. Step 6: Final answer
    x = 43,987.73

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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.