Home / 87,913.65-121,320.66-47,628.42

Finding the Fourth Proportional to 87,913.65, 121,320.66 and 47,628.42

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Solution

The fourth proportional to 87,913.65, 121,320.66 and 47,628.42 is: 65,727.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,913.65 : 121,320.66 = 47,628.42 : x
  2. Step 2: Convert to fraction form
    87,913.65/121,320.66 = 47,628.42/x
  3. Step 3: Cross multiply
    87,913.65x = 121,320.66 × 47,628.42
  4. Step 4: Simplify right side
    87,913.65x = 5,778,311,349.16
  5. Step 5: Solve for x
    x = 5,778,311,349.16/87,913.65
  6. Step 6: Final answer
    x = 65,727.12

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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.