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Finding the Fourth Proportional to 52,003.80, 78,005.70 and 51,226.20

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Solution

The fourth proportional to 52,003.80, 78,005.70 and 51,226.20 is: 76,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,003.80 : 78,005.70 = 51,226.20 : x
  2. Step 2: Convert to fraction form
    52,003.80/78,005.70 = 51,226.20/x
  3. Step 3: Cross multiply
    52,003.80x = 78,005.70 × 51,226.20
  4. Step 4: Simplify right side
    52,003.80x = 3,995,935,589.34
  5. Step 5: Solve for x
    x = 3,995,935,589.34/52,003.80
  6. Step 6: Final answer
    x = 76,839.30

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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.