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Finding the Fourth Proportional to 81,607.10, 122,400.93 and 22,448.78

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Solution

The fourth proportional to 81,607.10, 122,400.93 and 22,448.78 is: 33,670.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607.10 : 122,400.93 = 22,448.78 : x
  2. Step 2: Convert to fraction form
    81,607.10/122,400.93 = 22,448.78/x
  3. Step 3: Cross multiply
    81,607.10x = 122,400.93 × 22,448.78
  4. Step 4: Simplify right side
    81,607.10x = 2,747,751,549.37
  5. Step 5: Solve for x
    x = 2,747,751,549.37/81,607.10
  6. Step 6: Final answer
    x = 33,670.50

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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.