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Finding the Fourth Proportional to 66,370.56, 91,590.66 and 38,080.68

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Solution

The fourth proportional to 66,370.56, 91,590.66 and 38,080.68 is: 52,550.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,370.56 : 91,590.66 = 38,080.68 : x
  2. Step 2: Convert to fraction form
    66,370.56/91,590.66 = 38,080.68/x
  3. Step 3: Cross multiply
    66,370.56x = 91,590.66 × 38,080.68
  4. Step 4: Simplify right side
    66,370.56x = 3,487,834,614.45
  5. Step 5: Solve for x
    x = 3,487,834,614.45/66,370.56
  6. Step 6: Final answer
    x = 52,550.93

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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.