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Finding the Fourth Proportional to 79,138.55, 118,717.21 and 49,558.84

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Solution

The fourth proportional to 79,138.55, 118,717.21 and 49,558.84 is: 74,344.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,138.55 : 118,717.21 = 49,558.84 : x
  2. Step 2: Convert to fraction form
    79,138.55/118,717.21 = 49,558.84/x
  3. Step 3: Cross multiply
    79,138.55x = 118,717.21 × 49,558.84
  4. Step 4: Simplify right side
    79,138.55x = 5,883,486,980.79
  5. Step 5: Solve for x
    x = 5,883,486,980.79/79,138.55
  6. Step 6: Final answer
    x = 74,344.13

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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.