Home / 56,722.28-78,273.68-31,223.68

Finding the Fourth Proportional to 56,722.28, 78,273.68 and 31,223.68

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Solution

The fourth proportional to 56,722.28, 78,273.68 and 31,223.68 is: 43,086.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,722.28 : 78,273.68 = 31,223.68 : x
  2. Step 2: Convert to fraction form
    56,722.28/78,273.68 = 31,223.68/x
  3. Step 3: Cross multiply
    56,722.28x = 78,273.68 × 31,223.68
  4. Step 4: Simplify right side
    56,722.28x = 2,443,992,336.74
  5. Step 5: Solve for x
    x = 2,443,992,336.74/56,722.28
  6. Step 6: Final answer
    x = 43,086.99

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1.5x scale

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.