Home / 66,421.08-91,661.00-36,206.46

Finding the Fourth Proportional to 66,421.08, 91,661.00 and 36,206.46

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Solution

The fourth proportional to 66,421.08, 91,661.00 and 36,206.46 is: 49,964.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.08 : 91,661.00 = 36,206.46 : x
  2. Step 2: Convert to fraction form
    66,421.08/91,661.00 = 36,206.46/x
  3. Step 3: Cross multiply
    66,421.08x = 91,661.00 × 36,206.46
  4. Step 4: Simplify right side
    66,421.08x = 3,318,720,149.03
  5. Step 5: Solve for x
    x = 3,318,720,149.03/66,421.08
  6. Step 6: Final answer
    x = 49,964.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.