Home / 61,220.96-91,831.45-21,778.42

Finding the Fourth Proportional to 61,220.96, 91,831.45 and 21,778.42

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Solution

The fourth proportional to 61,220.96, 91,831.45 and 21,778.42 is: 32,667.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,220.96 : 91,831.45 = 21,778.42 : x
  2. Step 2: Convert to fraction form
    61,220.96/91,831.45 = 21,778.42/x
  3. Step 3: Cross multiply
    61,220.96x = 91,831.45 × 21,778.42
  4. Step 4: Simplify right side
    61,220.96x = 1,999,943,755.05
  5. Step 5: Solve for x
    x = 1,999,943,755.05/61,220.96
  6. Step 6: Final answer
    x = 32,667.63

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Similar ratio
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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.