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Finding the Fourth Proportional to 78,999.60, 118,456.20 and 32,199.60

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Solution

The fourth proportional to 78,999.60, 118,456.20 and 32,199.60 is: 48,281.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,999.60 : 118,456.20 = 32,199.60 : x
  2. Step 2: Convert to fraction form
    78,999.60/118,456.20 = 32,199.60/x
  3. Step 3: Cross multiply
    78,999.60x = 118,456.20 × 32,199.60
  4. Step 4: Simplify right side
    78,999.60x = 3,814,242,257.52
  5. Step 5: Solve for x
    x = 3,814,242,257.52/78,999.60
  6. Step 6: Final answer
    x = 48,281.79

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1.5x scale

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.