Home / 78,831.60-118,247.40-41,377.20

Finding the Fourth Proportional to 78,831.60, 118,247.40 and 41,377.20

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Solution

The fourth proportional to 78,831.60, 118,247.40 and 41,377.20 is: 62,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,831.60 : 118,247.40 = 41,377.20 : x
  2. Step 2: Convert to fraction form
    78,831.60/118,247.40 = 41,377.20/x
  3. Step 3: Cross multiply
    78,831.60x = 118,247.40 × 41,377.20
  4. Step 4: Simplify right side
    78,831.60x = 4,892,746,319.28
  5. Step 5: Solve for x
    x = 4,892,746,319.28/78,831.60
  6. Step 6: Final answer
    x = 62,065.80

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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.