Home / 57,432.12-86,141.32-15,315.36

Finding the Fourth Proportional to 57,432.12, 86,141.32 and 15,315.36

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Solution

The fourth proportional to 57,432.12, 86,141.32 and 15,315.36 is: 22,971.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,432.12 : 86,141.32 = 15,315.36 : x
  2. Step 2: Convert to fraction form
    57,432.12/86,141.32 = 15,315.36/x
  3. Step 3: Cross multiply
    57,432.12x = 86,141.32 × 15,315.36
  4. Step 4: Simplify right side
    57,432.12x = 1,319,285,326.68
  5. Step 5: Solve for x
    x = 1,319,285,326.68/57,432.12
  6. Step 6: Final answer
    x = 22,971.21

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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.