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Finding the Fourth Proportional to 103,700.70, 155,551.05 and 41,415.90

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Solution

The fourth proportional to 103,700.70, 155,551.05 and 41,415.90 is: 62,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,700.70 : 155,551.05 = 41,415.90 : x
  2. Step 2: Convert to fraction form
    103,700.70/155,551.05 = 41,415.90/x
  3. Step 3: Cross multiply
    103,700.70x = 155,551.05 × 41,415.90
  4. Step 4: Simplify right side
    103,700.70x = 6,442,286,731.70
  5. Step 5: Solve for x
    x = 6,442,286,731.70/103,700.70
  6. Step 6: Final answer
    x = 62,123.85

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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.