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Finding the Fourth Proportional to 71,464.81, 98,618.94 and 39,636.67

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Solution

The fourth proportional to 71,464.81, 98,618.94 and 39,636.67 is: 54,697.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,464.81 : 98,618.94 = 39,636.67 : x
  2. Step 2: Convert to fraction form
    71,464.81/98,618.94 = 39,636.67/x
  3. Step 3: Cross multiply
    71,464.81x = 98,618.94 × 39,636.67
  4. Step 4: Simplify right side
    71,464.81x = 3,908,926,380.53
  5. Step 5: Solve for x
    x = 3,908,926,380.53/71,464.81
  6. Step 6: Final answer
    x = 54,697.22

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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.