Home / 49,831.20-74,746.80-31,399.20

Finding the Fourth Proportional to 49,831.20, 74,746.80 and 31,399.20

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Solution

The fourth proportional to 49,831.20, 74,746.80 and 31,399.20 is: 47,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,831.20 : 74,746.80 = 31,399.20 : x
  2. Step 2: Convert to fraction form
    49,831.20/74,746.80 = 31,399.20/x
  3. Step 3: Cross multiply
    49,831.20x = 74,746.80 × 31,399.20
  4. Step 4: Simplify right side
    49,831.20x = 2,346,989,722.56
  5. Step 5: Solve for x
    x = 2,346,989,722.56/49,831.20
  6. Step 6: Final answer
    x = 47,098.80

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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.