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Finding the Fourth Proportional to 78,798.60, 118,052.10 and 73,549.80

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Solution

The fourth proportional to 78,798.60, 118,052.10 and 73,549.80 is: 110,188.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,798.60 : 118,052.10 = 73,549.80 : x
  2. Step 2: Convert to fraction form
    78,798.60/118,052.10 = 73,549.80/x
  3. Step 3: Cross multiply
    78,798.60x = 118,052.10 × 73,549.80
  4. Step 4: Simplify right side
    78,798.60x = 8,682,708,344.58
  5. Step 5: Solve for x
    x = 8,682,708,344.58/78,798.60
  6. Step 6: Final answer
    x = 110,188.61

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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.