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Finding the Fourth Proportional to 78,563.90, 117,822.36 and 22,400.12

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Solution

The fourth proportional to 78,563.90, 117,822.36 and 22,400.12 is: 33,593.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,563.90 : 117,822.36 = 22,400.12 : x
  2. Step 2: Convert to fraction form
    78,563.90/117,822.36 = 22,400.12/x
  3. Step 3: Cross multiply
    78,563.90x = 117,822.36 × 22,400.12
  4. Step 4: Simplify right side
    78,563.90x = 2,639,235,002.68
  5. Step 5: Solve for x
    x = 2,639,235,002.68/78,563.90
  6. Step 6: Final answer
    x = 33,593.48

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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.