Home / 79,430.18-109,606.50-43,619.40

Finding the Fourth Proportional to 79,430.18, 109,606.50 and 43,619.40

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Solution

The fourth proportional to 79,430.18, 109,606.50 and 43,619.40 is: 60,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,430.18 : 109,606.50 = 43,619.40 : x
  2. Step 2: Convert to fraction form
    79,430.18/109,606.50 = 43,619.40/x
  3. Step 3: Cross multiply
    79,430.18x = 109,606.50 × 43,619.40
  4. Step 4: Simplify right side
    79,430.18x = 4,780,969,766.10
  5. Step 5: Solve for x
    x = 4,780,969,766.10/79,430.18
  6. Step 6: Final answer
    x = 60,190.85

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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.