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Finding the Fourth Proportional to 51,678.80, 77,499.98 and 18,399.95

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Solution

The fourth proportional to 51,678.80, 77,499.98 and 18,399.95 is: 27,593.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,678.80 : 77,499.98 = 18,399.95 : x
  2. Step 2: Convert to fraction form
    51,678.80/77,499.98 = 18,399.95/x
  3. Step 3: Cross multiply
    51,678.80x = 77,499.98 × 18,399.95
  4. Step 4: Simplify right side
    51,678.80x = 1,425,995,665.00
  5. Step 5: Solve for x
    x = 1,425,995,665.00/51,678.80
  6. Step 6: Final answer
    x = 27,593.44

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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.