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Finding the Fourth Proportional to 70,821.85, 97,750.77 and 40,606.62

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Solution

The fourth proportional to 70,821.85, 97,750.77 and 40,606.62 is: 56,046.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,821.85 : 97,750.77 = 40,606.62 : x
  2. Step 2: Convert to fraction form
    70,821.85/97,750.77 = 40,606.62/x
  3. Step 3: Cross multiply
    70,821.85x = 97,750.77 × 40,606.62
  4. Step 4: Simplify right side
    70,821.85x = 3,969,328,372.10
  5. Step 5: Solve for x
    x = 3,969,328,372.10/70,821.85
  6. Step 6: Final answer
    x = 56,046.66

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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.