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Finding the Fourth Proportional to 61,810.28, 85,286.79 and 36,320.79

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Solution

The fourth proportional to 61,810.28, 85,286.79 and 36,320.79 is: 50,115.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,810.28 : 85,286.79 = 36,320.79 : x
  2. Step 2: Convert to fraction form
    61,810.28/85,286.79 = 36,320.79/x
  3. Step 3: Cross multiply
    61,810.28x = 85,286.79 × 36,320.79
  4. Step 4: Simplify right side
    61,810.28x = 3,097,683,589.36
  5. Step 5: Solve for x
    x = 3,097,683,589.36/61,810.28
  6. Step 6: Final answer
    x = 50,115.99

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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.