Home / 78,831.20-118,357.50-75,260.46

Finding the Fourth Proportional to 78,831.20, 118,357.50 and 75,260.46

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Solution

The fourth proportional to 78,831.20, 118,357.50 and 75,260.46 is: 112,996.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,831.20 : 118,357.50 = 75,260.46 : x
  2. Step 2: Convert to fraction form
    78,831.20/118,357.50 = 75,260.46/x
  3. Step 3: Cross multiply
    78,831.20x = 118,357.50 × 75,260.46
  4. Step 4: Simplify right side
    78,831.20x = 8,907,639,894.45
  5. Step 5: Solve for x
    x = 8,907,639,894.45/78,831.20
  6. Step 6: Final answer
    x = 112,996.38

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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.