Home / 87,913.85-121,320.93-47,628.60

Finding the Fourth Proportional to 87,913.85, 121,320.93 and 47,628.60

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Solution

The fourth proportional to 87,913.85, 121,320.93 and 47,628.60 is: 65,727.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,913.85 : 121,320.93 = 47,628.60 : x
  2. Step 2: Convert to fraction form
    87,913.85/121,320.93 = 47,628.60/x
  3. Step 3: Cross multiply
    87,913.85x = 121,320.93 × 47,628.60
  4. Step 4: Simplify right side
    87,913.85x = 5,778,346,046.60
  5. Step 5: Solve for x
    x = 5,778,346,046.60/87,913.85
  6. Step 6: Final answer
    x = 65,727.37

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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.