Home / 87,908.29-121,313.73-47,621.93

Finding the Fourth Proportional to 87,908.29, 121,313.73 and 47,621.93

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Solution

The fourth proportional to 87,908.29, 121,313.73 and 47,621.93 is: 65,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,908.29 : 121,313.73 = 47,621.93 : x
  2. Step 2: Convert to fraction form
    87,908.29/121,313.73 = 47,621.93/x
  3. Step 3: Cross multiply
    87,908.29x = 121,313.73 × 47,621.93
  4. Step 4: Simplify right side
    87,908.29x = 5,777,193,530.11
  5. Step 5: Solve for x
    x = 5,777,193,530.11/87,908.29
  6. Step 6: Final answer
    x = 65,718.42

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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.