Home / 78,004.68-117,015.20-25,418.24

Finding the Fourth Proportional to 78,004.68, 117,015.20 and 25,418.24

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Solution

The fourth proportional to 78,004.68, 117,015.20 and 25,418.24 is: 38,130.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.68 : 117,015.20 = 25,418.24 : x
  2. Step 2: Convert to fraction form
    78,004.68/117,015.20 = 25,418.24/x
  3. Step 3: Cross multiply
    78,004.68x = 117,015.20 × 25,418.24
  4. Step 4: Simplify right side
    78,004.68x = 2,974,320,437.25
  5. Step 5: Solve for x
    x = 2,974,320,437.25/78,004.68
  6. Step 6: Final answer
    x = 38,130.03

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1.5x scale

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.