Home / 57,122.60-78,831.65-31,628.97

Finding the Fourth Proportional to 57,122.60, 78,831.65 and 31,628.97

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Solution

The fourth proportional to 57,122.60, 78,831.65 and 31,628.97 is: 43,649.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,122.60 : 78,831.65 = 31,628.97 : x
  2. Step 2: Convert to fraction form
    57,122.60/78,831.65 = 31,628.97/x
  3. Step 3: Cross multiply
    57,122.60x = 78,831.65 × 31,628.97
  4. Step 4: Simplify right side
    57,122.60x = 2,493,363,734.76
  5. Step 5: Solve for x
    x = 2,493,363,734.76/57,122.60
  6. Step 6: Final answer
    x = 43,649.34

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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.