Home / 87,864.69-121,253.10-47,578.58

Finding the Fourth Proportional to 87,864.69, 121,253.10 and 47,578.58

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Solution

The fourth proportional to 87,864.69, 121,253.10 and 47,578.58 is: 65,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,864.69 : 121,253.10 = 47,578.58 : x
  2. Step 2: Convert to fraction form
    87,864.69/121,253.10 = 47,578.58/x
  3. Step 3: Cross multiply
    87,864.69x = 121,253.10 × 47,578.58
  4. Step 4: Simplify right side
    87,864.69x = 5,769,049,712.33
  5. Step 5: Solve for x
    x = 5,769,049,712.33/87,864.69
  6. Step 6: Final answer
    x = 65,658.34

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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.