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Finding the Fourth Proportional to 66,379.56, 91,603.08 and 38,089.68

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Solution

The fourth proportional to 66,379.56, 91,603.08 and 38,089.68 is: 52,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,379.56 : 91,603.08 = 38,089.68 : x
  2. Step 2: Convert to fraction form
    66,379.56/91,603.08 = 38,089.68/x
  3. Step 3: Cross multiply
    66,379.56x = 91,603.08 × 38,089.68
  4. Step 4: Simplify right side
    66,379.56x = 3,489,132,004.21
  5. Step 5: Solve for x
    x = 3,489,132,004.21/66,379.56
  6. Step 6: Final answer
    x = 52,563.35

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1.5x scale

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.