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Finding the Fourth Proportional to 66,906.56, 92,320.56 and 38,606.88

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Solution

The fourth proportional to 66,906.56, 92,320.56 and 38,606.88 is: 53,271.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,906.56 : 92,320.56 = 38,606.88 : x
  2. Step 2: Convert to fraction form
    66,906.56/92,320.56 = 38,606.88/x
  3. Step 3: Cross multiply
    66,906.56x = 92,320.56 × 38,606.88
  4. Step 4: Simplify right side
    66,906.56x = 3,564,208,781.45
  5. Step 5: Solve for x
    x = 3,564,208,781.45/66,906.56
  6. Step 6: Final answer
    x = 53,271.44

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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.