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Finding the Fourth Proportional to 40,983.80, 61,475.70 and 38,564.60

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Solution

The fourth proportional to 40,983.80, 61,475.70 and 38,564.60 is: 57,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,983.80 : 61,475.70 = 38,564.60 : x
  2. Step 2: Convert to fraction form
    40,983.80/61,475.70 = 38,564.60/x
  3. Step 3: Cross multiply
    40,983.80x = 61,475.70 × 38,564.60
  4. Step 4: Simplify right side
    40,983.80x = 2,370,785,780.22
  5. Step 5: Solve for x
    x = 2,370,785,780.22/40,983.80
  6. Step 6: Final answer
    x = 57,846.90

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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.