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Finding the Fourth Proportional to 85,393.74, 128,076.09 and 23,049.66

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Solution

The fourth proportional to 85,393.74, 128,076.09 and 23,049.66 is: 34,570.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,393.74 : 128,076.09 = 23,049.66 : x
  2. Step 2: Convert to fraction form
    85,393.74/128,076.09 = 23,049.66/x
  3. Step 3: Cross multiply
    85,393.74x = 128,076.09 × 23,049.66
  4. Step 4: Simplify right side
    85,393.74x = 2,952,110,328.63
  5. Step 5: Solve for x
    x = 2,952,110,328.63/85,393.74
  6. Step 6: Final answer
    x = 34,570.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.