Home / 79,135.24-109,206.33-45,143.66

Finding the Fourth Proportional to 79,135.24, 109,206.33 and 45,143.66

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Solution

The fourth proportional to 79,135.24, 109,206.33 and 45,143.66 is: 62,298.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,135.24 : 109,206.33 = 45,143.66 : x
  2. Step 2: Convert to fraction form
    79,135.24/109,206.33 = 45,143.66/x
  3. Step 3: Cross multiply
    79,135.24x = 109,206.33 × 45,143.66
  4. Step 4: Simplify right side
    79,135.24x = 4,929,973,379.50
  5. Step 5: Solve for x
    x = 4,929,973,379.50/79,135.24
  6. Step 6: Final answer
    x = 62,298.08

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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.