Home / 78,577.24-117,854.34-25,987.48

Finding the Fourth Proportional to 78,577.24, 117,854.34 and 25,987.48

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Solution

The fourth proportional to 78,577.24, 117,854.34 and 25,987.48 is: 38,977.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,577.24 : 117,854.34 = 25,987.48 : x
  2. Step 2: Convert to fraction form
    78,577.24/117,854.34 = 25,987.48/x
  3. Step 3: Cross multiply
    78,577.24x = 117,854.34 × 25,987.48
  4. Step 4: Simplify right side
    78,577.24x = 3,062,737,303.66
  5. Step 5: Solve for x
    x = 3,062,737,303.66/78,577.24
  6. Step 6: Final answer
    x = 38,977.41

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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.