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Finding the Fourth Proportional to 66,616.26, 91,931.64 and 36,402.84

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Solution

The fourth proportional to 66,616.26, 91,931.64 and 36,402.84 is: 50,236.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,616.26 : 91,931.64 = 36,402.84 : x
  2. Step 2: Convert to fraction form
    66,616.26/91,931.64 = 36,402.84/x
  3. Step 3: Cross multiply
    66,616.26x = 91,931.64 × 36,402.84
  4. Step 4: Simplify right side
    66,616.26x = 3,346,572,781.86
  5. Step 5: Solve for x
    x = 3,346,572,781.86/66,616.26
  6. Step 6: Final answer
    x = 50,236.58

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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.