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Finding the Fourth Proportional to 75,107.58, 103,647.51 and 45,299.58

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Solution

The fourth proportional to 75,107.58, 103,647.51 and 45,299.58 is: 62,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,107.58 : 103,647.51 = 45,299.58 : x
  2. Step 2: Convert to fraction form
    75,107.58/103,647.51 = 45,299.58/x
  3. Step 3: Cross multiply
    75,107.58x = 103,647.51 × 45,299.58
  4. Step 4: Simplify right side
    75,107.58x = 4,695,188,671.05
  5. Step 5: Solve for x
    x = 4,695,188,671.05/75,107.58
  6. Step 6: Final answer
    x = 62,512.85

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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.