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Finding the Fourth Proportional to 66,960.84, 92,405.16 and 38,665.92

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Solution

The fourth proportional to 66,960.84, 92,405.16 and 38,665.92 is: 53,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,960.84 : 92,405.16 = 38,665.92 : x
  2. Step 2: Convert to fraction form
    66,960.84/92,405.16 = 38,665.92/x
  3. Step 3: Cross multiply
    66,960.84x = 92,405.16 × 38,665.92
  4. Step 4: Simplify right side
    66,960.84x = 3,572,930,524.15
  5. Step 5: Solve for x
    x = 3,572,930,524.15/66,960.84
  6. Step 6: Final answer
    x = 53,358.51

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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.