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Finding the Fourth Proportional to 66,506.93, 91,781.57 and 37,830.71

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Solution

The fourth proportional to 66,506.93, 91,781.57 and 37,830.71 is: 52,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,506.93 : 91,781.57 = 37,830.71 : x
  2. Step 2: Convert to fraction form
    66,506.93/91,781.57 = 37,830.71/x
  3. Step 3: Cross multiply
    66,506.93x = 91,781.57 × 37,830.71
  4. Step 4: Simplify right side
    66,506.93x = 3,472,161,309.95
  5. Step 5: Solve for x
    x = 3,472,161,309.95/66,506.93
  6. Step 6: Final answer
    x = 52,207.52

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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.