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Finding the Fourth Proportional to 66,672.24, 92,009.28 and 39,830.19

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Solution

The fourth proportional to 66,672.24, 92,009.28 and 39,830.19 is: 54,966.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,672.24 : 92,009.28 = 39,830.19 : x
  2. Step 2: Convert to fraction form
    66,672.24/92,009.28 = 39,830.19/x
  3. Step 3: Cross multiply
    66,672.24x = 92,009.28 × 39,830.19
  4. Step 4: Simplify right side
    66,672.24x = 3,664,747,104.16
  5. Step 5: Solve for x
    x = 3,664,747,104.16/66,672.24
  6. Step 6: Final answer
    x = 54,966.61

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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.