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Finding the Fourth Proportional to 71,579.62, 98,776.83 and 39,750.67

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Solution

The fourth proportional to 71,579.62, 98,776.83 and 39,750.67 is: 54,854.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,579.62 : 98,776.83 = 39,750.67 : x
  2. Step 2: Convert to fraction form
    71,579.62/98,776.83 = 39,750.67/x
  3. Step 3: Cross multiply
    71,579.62x = 98,776.83 × 39,750.67
  4. Step 4: Simplify right side
    71,579.62x = 3,926,445,172.98
  5. Step 5: Solve for x
    x = 3,926,445,172.98/71,579.62
  6. Step 6: Final answer
    x = 54,854.23

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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.