Home / 78,928.68-118,393.02-32,185.20

Finding the Fourth Proportional to 78,928.68, 118,393.02 and 32,185.20

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Solution

The fourth proportional to 78,928.68, 118,393.02 and 32,185.20 is: 48,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.68 : 118,393.02 = 32,185.20 : x
  2. Step 2: Convert to fraction form
    78,928.68/118,393.02 = 32,185.20/x
  3. Step 3: Cross multiply
    78,928.68x = 118,393.02 × 32,185.20
  4. Step 4: Simplify right side
    78,928.68x = 3,810,503,027.30
  5. Step 5: Solve for x
    x = 3,810,503,027.30/78,928.68
  6. Step 6: Final answer
    x = 48,277.80

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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.