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Finding the Fourth Proportional to 81,746.69, 122,610.78 and 22,590.77

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Solution

The fourth proportional to 81,746.69, 122,610.78 and 22,590.77 is: 33,883.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,746.69 : 122,610.78 = 22,590.77 : x
  2. Step 2: Convert to fraction form
    81,746.69/122,610.78 = 22,590.77/x
  3. Step 3: Cross multiply
    81,746.69x = 122,610.78 × 22,590.77
  4. Step 4: Simplify right side
    81,746.69x = 2,769,871,317.45
  5. Step 5: Solve for x
    x = 2,769,871,317.45/81,746.69
  6. Step 6: Final answer
    x = 33,883.59

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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.