Home / 66,009.12-99,020.60-18,623.84

Finding the Fourth Proportional to 66,009.12, 99,020.60 and 18,623.84

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Solution

The fourth proportional to 66,009.12, 99,020.60 and 18,623.84 is: 27,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,009.12 : 99,020.60 = 18,623.84 : x
  2. Step 2: Convert to fraction form
    66,009.12/99,020.60 = 18,623.84/x
  3. Step 3: Cross multiply
    66,009.12x = 99,020.60 × 18,623.84
  4. Step 4: Simplify right side
    66,009.12x = 1,844,143,811.10
  5. Step 5: Solve for x
    x = 1,844,143,811.10/66,009.12
  6. Step 6: Final answer
    x = 27,937.71

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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.