Home / 79,131.79-109,199.13-45,151.27

Finding the Fourth Proportional to 79,131.79, 109,199.13 and 45,151.27

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Solution

The fourth proportional to 79,131.79, 109,199.13 and 45,151.27 is: 62,307.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,131.79 : 109,199.13 = 45,151.27 : x
  2. Step 2: Convert to fraction form
    79,131.79/109,199.13 = 45,151.27/x
  3. Step 3: Cross multiply
    79,131.79x = 109,199.13 × 45,151.27
  4. Step 4: Simplify right side
    79,131.79x = 4,930,479,402.40
  5. Step 5: Solve for x
    x = 4,930,479,402.40/79,131.79
  6. Step 6: Final answer
    x = 62,307.19

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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.