Home / 78,418.70-117,561.91-34,012.01

Finding the Fourth Proportional to 78,418.70, 117,561.91 and 34,012.01

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Solution

The fourth proportional to 78,418.70, 117,561.91 and 34,012.01 is: 50,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,418.70 : 117,561.91 = 34,012.01 : x
  2. Step 2: Convert to fraction form
    78,418.70/117,561.91 = 34,012.01/x
  3. Step 3: Cross multiply
    78,418.70x = 117,561.91 × 34,012.01
  4. Step 4: Simplify right side
    78,418.70x = 3,998,516,270.73
  5. Step 5: Solve for x
    x = 3,998,516,270.73/78,418.70
  6. Step 6: Final answer
    x = 50,989.32

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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.