Home / 87,913.64-121,320.68-47,628.42

Finding the Fourth Proportional to 87,913.64, 121,320.68 and 47,628.42

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Solution

The fourth proportional to 87,913.64, 121,320.68 and 47,628.42 is: 65,727.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,913.64 : 121,320.68 = 47,628.42 : x
  2. Step 2: Convert to fraction form
    87,913.64/121,320.68 = 47,628.42/x
  3. Step 3: Cross multiply
    87,913.64x = 121,320.68 × 47,628.42
  4. Step 4: Simplify right side
    87,913.64x = 5,778,312,063.58
  5. Step 5: Solve for x
    x = 5,778,312,063.58/87,913.64
  6. Step 6: Final answer
    x = 65,727.14

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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.