Home / 79,623.68-109,905.28-51,329.28

Finding the Fourth Proportional to 79,623.68, 109,905.28 and 51,329.28

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Solution

The fourth proportional to 79,623.68, 109,905.28 and 51,329.28 is: 70,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,623.68 : 109,905.28 = 51,329.28 : x
  2. Step 2: Convert to fraction form
    79,623.68/109,905.28 = 51,329.28/x
  3. Step 3: Cross multiply
    79,623.68x = 109,905.28 × 51,329.28
  4. Step 4: Simplify right side
    79,623.68x = 5,641,358,890.60
  5. Step 5: Solve for x
    x = 5,641,358,890.60/79,623.68
  6. Step 6: Final answer
    x = 70,850.27

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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.