Home / 57,432.16-86,141.38-15,315.40

Finding the Fourth Proportional to 57,432.16, 86,141.38 and 15,315.40

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Solution

The fourth proportional to 57,432.16, 86,141.38 and 15,315.40 is: 22,971.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,432.16 : 86,141.38 = 15,315.40 : x
  2. Step 2: Convert to fraction form
    57,432.16/86,141.38 = 15,315.40/x
  3. Step 3: Cross multiply
    57,432.16x = 86,141.38 × 15,315.40
  4. Step 4: Simplify right side
    57,432.16x = 1,319,289,691.25
  5. Step 5: Solve for x
    x = 1,319,289,691.25/57,432.16
  6. Step 6: Final answer
    x = 22,971.27

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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.