Home / 79,291.28-109,421.89-42,993.92

Finding the Fourth Proportional to 79,291.28, 109,421.89 and 42,993.92

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Solution

The fourth proportional to 79,291.28, 109,421.89 and 42,993.92 is: 59,331.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,291.28 : 109,421.89 = 42,993.92 : x
  2. Step 2: Convert to fraction form
    79,291.28/109,421.89 = 42,993.92/x
  3. Step 3: Cross multiply
    79,291.28x = 109,421.89 × 42,993.92
  4. Step 4: Simplify right side
    79,291.28x = 4,704,475,984.91
  5. Step 5: Solve for x
    x = 4,704,475,984.91/79,291.28
  6. Step 6: Final answer
    x = 59,331.57

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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.