Home / 78,518.16-117,788.10-25,197.60

Finding the Fourth Proportional to 78,518.16, 117,788.10 and 25,197.60

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Solution

The fourth proportional to 78,518.16, 117,788.10 and 25,197.60 is: 37,799.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,518.16 : 117,788.10 = 25,197.60 : x
  2. Step 2: Convert to fraction form
    78,518.16/117,788.10 = 25,197.60/x
  3. Step 3: Cross multiply
    78,518.16x = 117,788.10 × 25,197.60
  4. Step 4: Simplify right side
    78,518.16x = 2,967,977,428.56
  5. Step 5: Solve for x
    x = 2,967,977,428.56/78,518.16
  6. Step 6: Final answer
    x = 37,799.89

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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.