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Finding the Fourth Proportional to 72,671.88, 100,246.17 and 45,768.15

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Solution

The fourth proportional to 72,671.88, 100,246.17 and 45,768.15 is: 63,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,671.88 : 100,246.17 = 45,768.15 : x
  2. Step 2: Convert to fraction form
    72,671.88/100,246.17 = 45,768.15/x
  3. Step 3: Cross multiply
    72,671.88x = 100,246.17 × 45,768.15
  4. Step 4: Simplify right side
    72,671.88x = 4,588,081,745.49
  5. Step 5: Solve for x
    x = 4,588,081,745.49/72,671.88
  6. Step 6: Final answer
    x = 63,134.21

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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.