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Finding the Fourth Proportional to 65,803.78, 90,827.49 and 38,955.52

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Solution

The fourth proportional to 65,803.78, 90,827.49 and 38,955.52 is: 53,769.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,803.78 : 90,827.49 = 38,955.52 : x
  2. Step 2: Convert to fraction form
    65,803.78/90,827.49 = 38,955.52/x
  3. Step 3: Cross multiply
    65,803.78x = 90,827.49 × 38,955.52
  4. Step 4: Simplify right side
    65,803.78x = 3,538,232,103.24
  5. Step 5: Solve for x
    x = 3,538,232,103.24/65,803.78
  6. Step 6: Final answer
    x = 53,769.44

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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.