Home / 78,555.28-118,029.76-73,831.36

Finding the Fourth Proportional to 78,555.28, 118,029.76 and 73,831.36

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Solution

The fourth proportional to 78,555.28, 118,029.76 and 73,831.36 is: 110,932.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,555.28 : 118,029.76 = 73,831.36 : x
  2. Step 2: Convert to fraction form
    78,555.28/118,029.76 = 73,831.36/x
  3. Step 3: Cross multiply
    78,555.28x = 118,029.76 × 73,831.36
  4. Step 4: Simplify right side
    78,555.28x = 8,714,297,701.27
  5. Step 5: Solve for x
    x = 8,714,297,701.27/78,555.28
  6. Step 6: Final answer
    x = 110,932.04

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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.