Home / 86,921.19-119,947.10-53,380.71

Finding the Fourth Proportional to 86,921.19, 119,947.10 and 53,380.71

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Solution

The fourth proportional to 86,921.19, 119,947.10 and 53,380.71 is: 73,662.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,921.19 : 119,947.10 = 53,380.71 : x
  2. Step 2: Convert to fraction form
    86,921.19/119,947.10 = 53,380.71/x
  3. Step 3: Cross multiply
    86,921.19x = 119,947.10 × 53,380.71
  4. Step 4: Simplify right side
    86,921.19x = 6,402,861,093.54
  5. Step 5: Solve for x
    x = 6,402,861,093.54/86,921.19
  6. Step 6: Final answer
    x = 73,662.83

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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.