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Finding the Fourth Proportional to 52,581, 78,868.62 and 21,442.44

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Solution

The fourth proportional to 52,581, 78,868.62 and 21,442.44 is: 32,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,581 : 78,868.62 = 21,442.44 : x
  2. Step 2: Convert to fraction form
    52,581/78,868.62 = 21,442.44/x
  3. Step 3: Cross multiply
    52,581x = 78,868.62 × 21,442.44
  4. Step 4: Simplify right side
    52,581x = 1,691,135,652.23
  5. Step 5: Solve for x
    x = 1,691,135,652.23/52,581
  6. Step 6: Final answer
    x = 32,162.49

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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.