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Finding the Fourth Proportional to 70,776.55, 97,668.89 and 40,540.37

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Solution

The fourth proportional to 70,776.55, 97,668.89 and 40,540.37 is: 55,944.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,776.55 : 97,668.89 = 40,540.37 : x
  2. Step 2: Convert to fraction form
    70,776.55/97,668.89 = 40,540.37/x
  3. Step 3: Cross multiply
    70,776.55x = 97,668.89 × 40,540.37
  4. Step 4: Simplify right side
    70,776.55x = 3,959,532,399.07
  5. Step 5: Solve for x
    x = 3,959,532,399.07/70,776.55
  6. Step 6: Final answer
    x = 55,944.13

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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.