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Finding the Fourth Proportional to 66,926.81, 92,366.72 and 40,069.30

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Solution

The fourth proportional to 66,926.81, 92,366.72 and 40,069.30 is: 55,300.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,926.81 : 92,366.72 = 40,069.30 : x
  2. Step 2: Convert to fraction form
    66,926.81/92,366.72 = 40,069.30/x
  3. Step 3: Cross multiply
    66,926.81x = 92,366.72 × 40,069.30
  4. Step 4: Simplify right side
    66,926.81x = 3,701,069,813.70
  5. Step 5: Solve for x
    x = 3,701,069,813.70/66,926.81
  6. Step 6: Final answer
    x = 55,300.26

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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.