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Finding the Fourth Proportional to 79,670.79, 109,947.49 and 45,217.80

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Solution

The fourth proportional to 79,670.79, 109,947.49 and 45,217.80 is: 62,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,670.79 : 109,947.49 = 45,217.80 : x
  2. Step 2: Convert to fraction form
    79,670.79/109,947.49 = 45,217.80/x
  3. Step 3: Cross multiply
    79,670.79x = 109,947.49 × 45,217.80
  4. Step 4: Simplify right side
    79,670.79x = 4,971,582,837.50
  5. Step 5: Solve for x
    x = 4,971,582,837.50/79,670.79
  6. Step 6: Final answer
    x = 62,401.58

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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.