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Finding the Fourth Proportional to 40,878.70, 61,318.05 and 22,216.30

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Solution

The fourth proportional to 40,878.70, 61,318.05 and 22,216.30 is: 33,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,878.70 : 61,318.05 = 22,216.30 : x
  2. Step 2: Convert to fraction form
    40,878.70/61,318.05 = 22,216.30/x
  3. Step 3: Cross multiply
    40,878.70x = 61,318.05 × 22,216.30
  4. Step 4: Simplify right side
    40,878.70x = 1,362,260,194.22
  5. Step 5: Solve for x
    x = 1,362,260,194.22/40,878.70
  6. Step 6: Final answer
    x = 33,324.45

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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.