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Finding the Fourth Proportional to 52,353.62, 78,485.07 and 21,168.62

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Solution

The fourth proportional to 52,353.62, 78,485.07 and 21,168.62 is: 31,734.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,353.62 : 78,485.07 = 21,168.62 : x
  2. Step 2: Convert to fraction form
    52,353.62/78,485.07 = 21,168.62/x
  3. Step 3: Cross multiply
    52,353.62x = 78,485.07 × 21,168.62
  4. Step 4: Simplify right side
    52,353.62x = 1,661,420,622.50
  5. Step 5: Solve for x
    x = 1,661,420,622.50/52,353.62
  6. Step 6: Final answer
    x = 31,734.59

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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.