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Finding the Fourth Proportional to 71,589.85, 98,801.83 and 40,965.78

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Solution

The fourth proportional to 71,589.85, 98,801.83 and 40,965.78 is: 56,537.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,589.85 : 98,801.83 = 40,965.78 : x
  2. Step 2: Convert to fraction form
    71,589.85/98,801.83 = 40,965.78/x
  3. Step 3: Cross multiply
    71,589.85x = 98,801.83 × 40,965.78
  4. Step 4: Simplify right side
    71,589.85x = 4,047,493,389.02
  5. Step 5: Solve for x
    x = 4,047,493,389.02/71,589.85
  6. Step 6: Final answer
    x = 56,537.25

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1.5x scale

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.