Home / 66,401.38-99,621.58-19,655.46

Finding the Fourth Proportional to 66,401.38, 99,621.58 and 19,655.46

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Solution

The fourth proportional to 66,401.38, 99,621.58 and 19,655.46 is: 29,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,401.38 : 99,621.58 = 19,655.46 : x
  2. Step 2: Convert to fraction form
    66,401.38/99,621.58 = 19,655.46/x
  3. Step 3: Cross multiply
    66,401.38x = 99,621.58 × 19,655.46
  4. Step 4: Simplify right side
    66,401.38x = 1,958,107,980.83
  5. Step 5: Solve for x
    x = 1,958,107,980.83/66,401.38
  6. Step 6: Final answer
    x = 29,488.97

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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.