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Finding the Fourth Proportional to 70,743.50, 97,639.90 and 40,549.06

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Solution

The fourth proportional to 70,743.50, 97,639.90 and 40,549.06 is: 55,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,743.50 : 97,639.90 = 40,549.06 : x
  2. Step 2: Convert to fraction form
    70,743.50/97,639.90 = 40,549.06/x
  3. Step 3: Cross multiply
    70,743.50x = 97,639.90 × 40,549.06
  4. Step 4: Simplify right side
    70,743.50x = 3,959,206,163.49
  5. Step 5: Solve for x
    x = 3,959,206,163.49/70,743.50
  6. Step 6: Final answer
    x = 55,965.65

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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.