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Finding the Fourth Proportional to 66,999.48, 92,227.32 and 57,920.64

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Solution

The fourth proportional to 66,999.48, 92,227.32 and 57,920.64 is: 79,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,999.48 : 92,227.32 = 57,920.64 : x
  2. Step 2: Convert to fraction form
    66,999.48/92,227.32 = 57,920.64/x
  3. Step 3: Cross multiply
    66,999.48x = 92,227.32 × 57,920.64
  4. Step 4: Simplify right side
    66,999.48x = 5,341,865,399.88
  5. Step 5: Solve for x
    x = 5,341,865,399.88/66,999.48
  6. Step 6: Final answer
    x = 79,729.95

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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.