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Finding the Fourth Proportional to 66,486.85, 91,751.66 and 36,271.96

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Solution

The fourth proportional to 66,486.85, 91,751.66 and 36,271.96 is: 50,055.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486.85 : 91,751.66 = 36,271.96 : x
  2. Step 2: Convert to fraction form
    66,486.85/91,751.66 = 36,271.96/x
  3. Step 3: Cross multiply
    66,486.85x = 91,751.66 × 36,271.96
  4. Step 4: Simplify right side
    66,486.85x = 3,328,011,913.42
  5. Step 5: Solve for x
    x = 3,328,011,913.42/66,486.85
  6. Step 6: Final answer
    x = 50,055.19

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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.