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Finding the Fourth Proportional to 52,604.40, 78,892.20 and 21,442.80

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Solution

The fourth proportional to 52,604.40, 78,892.20 and 21,442.80 is: 32,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,604.40 : 78,892.20 = 21,442.80 : x
  2. Step 2: Convert to fraction form
    52,604.40/78,892.20 = 21,442.80/x
  3. Step 3: Cross multiply
    52,604.40x = 78,892.20 × 21,442.80
  4. Step 4: Simplify right side
    52,604.40x = 1,691,669,666.16
  5. Step 5: Solve for x
    x = 1,691,669,666.16/52,604.40
  6. Step 6: Final answer
    x = 32,158.33

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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.