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Finding the Fourth Proportional to 70,881.72, 97,821.20 and 39,050.62

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Solution

The fourth proportional to 70,881.72, 97,821.20 and 39,050.62 is: 53,892.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,881.72 : 97,821.20 = 39,050.62 : x
  2. Step 2: Convert to fraction form
    70,881.72/97,821.20 = 39,050.62/x
  3. Step 3: Cross multiply
    70,881.72x = 97,821.20 × 39,050.62
  4. Step 4: Simplify right side
    70,881.72x = 3,819,978,509.14
  5. Step 5: Solve for x
    x = 3,819,978,509.14/70,881.72
  6. Step 6: Final answer
    x = 53,892.29

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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.