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Finding the Fourth Proportional to 66,730.50, 92,069.97 and 39,861.06

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Solution

The fourth proportional to 66,730.50, 92,069.97 and 39,861.06 is: 54,997.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,730.50 : 92,069.97 = 39,861.06 : x
  2. Step 2: Convert to fraction form
    66,730.50/92,069.97 = 39,861.06/x
  3. Step 3: Cross multiply
    66,730.50x = 92,069.97 × 39,861.06
  4. Step 4: Simplify right side
    66,730.50x = 3,670,006,598.37
  5. Step 5: Solve for x
    x = 3,670,006,598.37/66,730.50
  6. Step 6: Final answer
    x = 54,997.44

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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.