Home / 78,765.02-117,788.39-58,788.60

Finding the Fourth Proportional to 78,765.02, 117,788.39 and 58,788.60

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Solution

The fourth proportional to 78,765.02, 117,788.39 and 58,788.60 is: 87,914.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765.02 : 117,788.39 = 58,788.60 : x
  2. Step 2: Convert to fraction form
    78,765.02/117,788.39 = 58,788.60/x
  3. Step 3: Cross multiply
    78,765.02x = 117,788.39 × 58,788.60
  4. Step 4: Simplify right side
    78,765.02x = 6,924,614,544.35
  5. Step 5: Solve for x
    x = 6,924,614,544.35/78,765.02
  6. Step 6: Final answer
    x = 87,914.85

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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.