Home / 87,909.17-121,216.94-63,662.17

Finding the Fourth Proportional to 87,909.17, 121,216.94 and 63,662.17

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Solution

The fourth proportional to 87,909.17, 121,216.94 and 63,662.17 is: 87,783.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.17 : 121,216.94 = 63,662.17 : x
  2. Step 2: Convert to fraction form
    87,909.17/121,216.94 = 63,662.17/x
  3. Step 3: Cross multiply
    87,909.17x = 121,216.94 × 63,662.17
  4. Step 4: Simplify right side
    87,909.17x = 7,716,933,285.82
  5. Step 5: Solve for x
    x = 7,716,933,285.82/87,909.17
  6. Step 6: Final answer
    x = 87,783.03

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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.