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Finding the Fourth Proportional to 66,962.88, 92,402.46 and 40,104.90

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Solution

The fourth proportional to 66,962.88, 92,402.46 and 40,104.90 is: 55,340.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,962.88 : 92,402.46 = 40,104.90 : x
  2. Step 2: Convert to fraction form
    66,962.88/92,402.46 = 40,104.90/x
  3. Step 3: Cross multiply
    66,962.88x = 92,402.46 × 40,104.90
  4. Step 4: Simplify right side
    66,962.88x = 3,705,791,418.05
  5. Step 5: Solve for x
    x = 3,705,791,418.05/66,962.88
  6. Step 6: Final answer
    x = 55,340.98

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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.