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Finding the Fourth Proportional to 79,149.96, 109,216.81 and 45,156.49

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Solution

The fourth proportional to 79,149.96, 109,216.81 and 45,156.49 is: 62,310.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,149.96 : 109,216.81 = 45,156.49 : x
  2. Step 2: Convert to fraction form
    79,149.96/109,216.81 = 45,156.49/x
  3. Step 3: Cross multiply
    79,149.96x = 109,216.81 × 45,156.49
  4. Step 4: Simplify right side
    79,149.96x = 4,931,847,318.00
  5. Step 5: Solve for x
    x = 4,931,847,318.00/79,149.96
  6. Step 6: Final answer
    x = 62,310.17

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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.