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Finding the Fourth Proportional to 75,671.81, 113,468.28 and 28,247.90

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Solution

The fourth proportional to 75,671.81, 113,468.28 and 28,247.90 is: 42,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,671.81 : 113,468.28 = 28,247.90 : x
  2. Step 2: Convert to fraction form
    75,671.81/113,468.28 = 28,247.90/x
  3. Step 3: Cross multiply
    75,671.81x = 113,468.28 × 28,247.90
  4. Step 4: Simplify right side
    75,671.81x = 3,205,240,059.27
  5. Step 5: Solve for x
    x = 3,205,240,059.27/75,671.81
  6. Step 6: Final answer
    x = 42,357.12

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1.5x scale

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.