Home / 78,719.30-118,115.40-41,321.60

Finding the Fourth Proportional to 78,719.30, 118,115.40 and 41,321.60

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Solution

The fourth proportional to 78,719.30, 118,115.40 and 41,321.60 is: 62,001.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,719.30 : 118,115.40 = 41,321.60 : x
  2. Step 2: Convert to fraction form
    78,719.30/118,115.40 = 41,321.60/x
  3. Step 3: Cross multiply
    78,719.30x = 118,115.40 × 41,321.60
  4. Step 4: Simplify right side
    78,719.30x = 4,880,717,312.64
  5. Step 5: Solve for x
    x = 4,880,717,312.64/78,719.30
  6. Step 6: Final answer
    x = 62,001.53

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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.