Home / 57,431.11-86,139.82-15,314.35

Finding the Fourth Proportional to 57,431.11, 86,139.82 and 15,314.35

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Solution

The fourth proportional to 57,431.11, 86,139.82 and 15,314.35 is: 22,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,431.11 : 86,139.82 = 15,314.35 : x
  2. Step 2: Convert to fraction form
    57,431.11/86,139.82 = 15,314.35/x
  3. Step 3: Cross multiply
    57,431.11x = 86,139.82 × 15,314.35
  4. Step 4: Simplify right side
    57,431.11x = 1,319,175,352.42
  5. Step 5: Solve for x
    x = 1,319,175,352.42/57,431.11
  6. Step 6: Final answer
    x = 22,969.70

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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.