Home / 87,839.70-121,165.65-64,846.77

Finding the Fourth Proportional to 87,839.70, 121,165.65 and 64,846.77

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Solution

The fourth proportional to 87,839.70, 121,165.65 and 64,846.77 is: 89,449.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,839.70 : 121,165.65 = 64,846.77 : x
  2. Step 2: Convert to fraction form
    87,839.70/121,165.65 = 64,846.77/x
  3. Step 3: Cross multiply
    87,839.70x = 121,165.65 × 64,846.77
  4. Step 4: Simplify right side
    87,839.70x = 7,857,201,037.45
  5. Step 5: Solve for x
    x = 7,857,201,037.45/87,839.70
  6. Step 6: Final answer
    x = 89,449.32

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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.