Home / 57,148.11-78,867.36-31,657.28

Finding the Fourth Proportional to 57,148.11, 78,867.36 and 31,657.28

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Solution

The fourth proportional to 57,148.11, 78,867.36 and 31,657.28 is: 43,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,148.11 : 78,867.36 = 31,657.28 : x
  2. Step 2: Convert to fraction form
    57,148.11/78,867.36 = 31,657.28/x
  3. Step 3: Cross multiply
    57,148.11x = 78,867.36 × 31,657.28
  4. Step 4: Simplify right side
    57,148.11x = 2,496,725,704.04
  5. Step 5: Solve for x
    x = 2,496,725,704.04/57,148.11
  6. Step 6: Final answer
    x = 43,688.68

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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.