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Finding the Fourth Proportional to 66,571.08, 99,855.54 and 19,822.20

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Solution

The fourth proportional to 66,571.08, 99,855.54 and 19,822.20 is: 29,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,571.08 : 99,855.54 = 19,822.20 : x
  2. Step 2: Convert to fraction form
    66,571.08/99,855.54 = 19,822.20/x
  3. Step 3: Cross multiply
    66,571.08x = 99,855.54 × 19,822.20
  4. Step 4: Simplify right side
    66,571.08x = 1,979,356,484.99
  5. Step 5: Solve for x
    x = 1,979,356,484.99/66,571.08
  6. Step 6: Final answer
    x = 29,732.98

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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.