Home / 78,003.02-117,014.26-25,398.38

Finding the Fourth Proportional to 78,003.02, 117,014.26 and 25,398.38

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Solution

The fourth proportional to 78,003.02, 117,014.26 and 25,398.38 is: 38,100.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003.02 : 117,014.26 = 25,398.38 : x
  2. Step 2: Convert to fraction form
    78,003.02/117,014.26 = 25,398.38/x
  3. Step 3: Cross multiply
    78,003.02x = 117,014.26 × 25,398.38
  4. Step 4: Simplify right side
    78,003.02x = 2,971,972,640.90
  5. Step 5: Solve for x
    x = 2,971,972,640.90/78,003.02
  6. Step 6: Final answer
    x = 38,100.74

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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.