Home / 57,431.16-86,139.89-15,314.40

Finding the Fourth Proportional to 57,431.16, 86,139.89 and 15,314.40

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Solution

The fourth proportional to 57,431.16, 86,139.89 and 15,314.40 is: 22,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,431.16 : 86,139.89 = 15,314.40 : x
  2. Step 2: Convert to fraction form
    57,431.16/86,139.89 = 15,314.40/x
  3. Step 3: Cross multiply
    57,431.16x = 86,139.89 × 15,314.40
  4. Step 4: Simplify right side
    57,431.16x = 1,319,180,654.84
  5. Step 5: Solve for x
    x = 1,319,180,654.84/57,431.16
  6. Step 6: Final answer
    x = 22,969.77

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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.