Home / 79,139.10-109,213.26-43,328.52

Finding the Fourth Proportional to 79,139.10, 109,213.26 and 43,328.52

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Solution

The fourth proportional to 79,139.10, 109,213.26 and 43,328.52 is: 59,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.10 : 109,213.26 = 43,328.52 : x
  2. Step 2: Convert to fraction form
    79,139.10/109,213.26 = 43,328.52/x
  3. Step 3: Cross multiply
    79,139.10x = 109,213.26 × 43,328.52
  4. Step 4: Simplify right side
    79,139.10x = 4,732,048,920.18
  5. Step 5: Solve for x
    x = 4,732,048,920.18/79,139.10
  6. Step 6: Final answer
    x = 59,794.07

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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.