Home / 90,947.72-125,503.94-50,665.81

Finding the Fourth Proportional to 90,947.72, 125,503.94 and 50,665.81

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Solution

The fourth proportional to 90,947.72, 125,503.94 and 50,665.81 is: 69,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,947.72 : 125,503.94 = 50,665.81 : x
  2. Step 2: Convert to fraction form
    90,947.72/125,503.94 = 50,665.81/x
  3. Step 3: Cross multiply
    90,947.72x = 125,503.94 × 50,665.81
  4. Step 4: Simplify right side
    90,947.72x = 6,358,758,591.20
  5. Step 5: Solve for x
    x = 6,358,758,591.20/90,947.72
  6. Step 6: Final answer
    x = 69,916.64

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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.