Home / 87,871.86-121,263.50-47,585.64

Finding the Fourth Proportional to 87,871.86, 121,263.50 and 47,585.64

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Solution

The fourth proportional to 87,871.86, 121,263.50 and 47,585.64 is: 65,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,871.86 : 121,263.50 = 47,585.64 : x
  2. Step 2: Convert to fraction form
    87,871.86/121,263.50 = 47,585.64/x
  3. Step 3: Cross multiply
    87,871.86x = 121,263.50 × 47,585.64
  4. Step 4: Simplify right side
    87,871.86x = 5,770,401,256.14
  5. Step 5: Solve for x
    x = 5,770,401,256.14/87,871.86
  6. Step 6: Final answer
    x = 65,668.36

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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.