Home / 76,947.09-106,103.28-50,039.70

Finding the Fourth Proportional to 76,947.09, 106,103.28 and 50,039.70

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Solution

The fourth proportional to 76,947.09, 106,103.28 and 50,039.70 is: 69,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,947.09 : 106,103.28 = 50,039.70 : x
  2. Step 2: Convert to fraction form
    76,947.09/106,103.28 = 50,039.70/x
  3. Step 3: Cross multiply
    76,947.09x = 106,103.28 × 50,039.70
  4. Step 4: Simplify right side
    76,947.09x = 5,309,376,300.22
  5. Step 5: Solve for x
    x = 5,309,376,300.22/76,947.09
  6. Step 6: Final answer
    x = 69,000.35

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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.