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Finding the Fourth Proportional to 69,615.86, 96,076.09 and 40,921.13

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Solution

The fourth proportional to 69,615.86, 96,076.09 and 40,921.13 is: 56,474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,615.86 : 96,076.09 = 40,921.13 : x
  2. Step 2: Convert to fraction form
    69,615.86/96,076.09 = 40,921.13/x
  3. Step 3: Cross multiply
    69,615.86x = 96,076.09 × 40,921.13
  4. Step 4: Simplify right side
    69,615.86x = 3,931,542,460.12
  5. Step 5: Solve for x
    x = 3,931,542,460.12/69,615.86
  6. Step 6: Final answer
    x = 56,474.81

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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.