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Finding the Fourth Proportional to 66,677.34, 91,983.90 and 38,366.64

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Solution

The fourth proportional to 66,677.34, 91,983.90 and 38,366.64 is: 52,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,677.34 : 91,983.90 = 38,366.64 : x
  2. Step 2: Convert to fraction form
    66,677.34/91,983.90 = 38,366.64/x
  3. Step 3: Cross multiply
    66,677.34x = 91,983.90 × 38,366.64
  4. Step 4: Simplify right side
    66,677.34x = 3,529,113,177.10
  5. Step 5: Solve for x
    x = 3,529,113,177.10/66,677.34
  6. Step 6: Final answer
    x = 52,928.22

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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.