Home / 78,282.36-117,431.23-22,122.90

Finding the Fourth Proportional to 78,282.36, 117,431.23 and 22,122.90

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Solution

The fourth proportional to 78,282.36, 117,431.23 and 22,122.90 is: 33,186.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,282.36 : 117,431.23 = 22,122.90 : x
  2. Step 2: Convert to fraction form
    78,282.36/117,431.23 = 22,122.90/x
  3. Step 3: Cross multiply
    78,282.36x = 117,431.23 × 22,122.90
  4. Step 4: Simplify right side
    78,282.36x = 2,597,919,358.17
  5. Step 5: Solve for x
    x = 2,597,919,358.17/78,282.36
  6. Step 6: Final answer
    x = 33,186.52

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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.