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Finding the Fourth Proportional to 66,508.48, 91,781.76 and 36,700.48

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Solution

The fourth proportional to 66,508.48, 91,781.76 and 36,700.48 is: 50,646.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508.48 : 91,781.76 = 36,700.48 : x
  2. Step 2: Convert to fraction form
    66,508.48/91,781.76 = 36,700.48/x
  3. Step 3: Cross multiply
    66,508.48x = 91,781.76 × 36,700.48
  4. Step 4: Simplify right side
    66,508.48x = 3,368,434,647.24
  5. Step 5: Solve for x
    x = 3,368,434,647.24/66,508.48
  6. Step 6: Final answer
    x = 50,646.69

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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.