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Finding the Fourth Proportional to 79,147.84, 109,224.19 and 42,849.67

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Solution

The fourth proportional to 79,147.84, 109,224.19 and 42,849.67 is: 59,132.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,147.84 : 109,224.19 = 42,849.67 : x
  2. Step 2: Convert to fraction form
    79,147.84/109,224.19 = 42,849.67/x
  3. Step 3: Cross multiply
    79,147.84x = 109,224.19 × 42,849.67
  4. Step 4: Simplify right side
    79,147.84x = 4,680,220,028.83
  5. Step 5: Solve for x
    x = 4,680,220,028.83/79,147.84
  6. Step 6: Final answer
    x = 59,132.63

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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.