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Finding the Fourth Proportional to 66,306.94, 99,463.14 and 19,559.81

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Solution

The fourth proportional to 66,306.94, 99,463.14 and 19,559.81 is: 29,340.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,306.94 : 99,463.14 = 19,559.81 : x
  2. Step 2: Convert to fraction form
    66,306.94/99,463.14 = 19,559.81/x
  3. Step 3: Cross multiply
    66,306.94x = 99,463.14 × 19,559.81
  4. Step 4: Simplify right side
    66,306.94x = 1,945,480,369.06
  5. Step 5: Solve for x
    x = 1,945,480,369.06/66,306.94
  6. Step 6: Final answer
    x = 29,340.53

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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.