Home / 66,421.42-91,658.79-36,206.09

Finding the Fourth Proportional to 66,421.42, 91,658.79 and 36,206.09

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Solution

The fourth proportional to 66,421.42, 91,658.79 and 36,206.09 is: 49,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.42 : 91,658.79 = 36,206.09 : x
  2. Step 2: Convert to fraction form
    66,421.42/91,658.79 = 36,206.09/x
  3. Step 3: Cross multiply
    66,421.42x = 91,658.79 × 36,206.09
  4. Step 4: Simplify right side
    66,421.42x = 3,318,606,285.46
  5. Step 5: Solve for x
    x = 3,318,606,285.46/66,421.42
  6. Step 6: Final answer
    x = 49,962.89

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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.