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Finding the Fourth Proportional to 78,880.64, 118,262.56 and 37,279.04

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Solution

The fourth proportional to 78,880.64, 118,262.56 and 37,279.04 is: 55,890.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880.64 : 118,262.56 = 37,279.04 : x
  2. Step 2: Convert to fraction form
    78,880.64/118,262.56 = 37,279.04/x
  3. Step 3: Cross multiply
    78,880.64x = 118,262.56 × 37,279.04
  4. Step 4: Simplify right side
    78,880.64x = 4,408,714,704.74
  5. Step 5: Solve for x
    x = 4,408,714,704.74/78,880.64
  6. Step 6: Final answer
    x = 55,890.96

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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.