Home / 79,288.20-109,412.28-43,470.78

Finding the Fourth Proportional to 79,288.20, 109,412.28 and 43,470.78

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Solution

The fourth proportional to 79,288.20, 109,412.28 and 43,470.78 is: 59,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,288.20 : 109,412.28 = 43,470.78 : x
  2. Step 2: Convert to fraction form
    79,288.20/109,412.28 = 43,470.78/x
  3. Step 3: Cross multiply
    79,288.20x = 109,412.28 × 43,470.78
  4. Step 4: Simplify right side
    79,288.20x = 4,756,237,153.18
  5. Step 5: Solve for x
    x = 4,756,237,153.18/79,288.20
  6. Step 6: Final answer
    x = 59,986.70

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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.