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Finding the Fourth Proportional to 60,805.40, 91,217.22 and 21,355.56

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Solution

The fourth proportional to 60,805.40, 91,217.22 and 21,355.56 is: 32,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,805.40 : 91,217.22 = 21,355.56 : x
  2. Step 2: Convert to fraction form
    60,805.40/91,217.22 = 21,355.56/x
  3. Step 3: Cross multiply
    60,805.40x = 91,217.22 × 21,355.56
  4. Step 4: Simplify right side
    60,805.40x = 1,947,994,814.74
  5. Step 5: Solve for x
    x = 1,947,994,814.74/60,805.40
  6. Step 6: Final answer
    x = 32,036.54

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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.