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Finding the Fourth Proportional to 66,841.50, 92,241.27 and 39,985.14

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Solution

The fourth proportional to 66,841.50, 92,241.27 and 39,985.14 is: 55,179.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,841.50 : 92,241.27 = 39,985.14 : x
  2. Step 2: Convert to fraction form
    66,841.50/92,241.27 = 39,985.14/x
  3. Step 3: Cross multiply
    66,841.50x = 92,241.27 × 39,985.14
  4. Step 4: Simplify right side
    66,841.50x = 3,688,280,094.73
  5. Step 5: Solve for x
    x = 3,688,280,094.73/66,841.50
  6. Step 6: Final answer
    x = 55,179.49

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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.