Home / 87,798.27-121,213.81-57,636.35

Finding the Fourth Proportional to 87,798.27, 121,213.81 and 57,636.35

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Solution

The fourth proportional to 87,798.27, 121,213.81 and 57,636.35 is: 79,572.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,798.27 : 121,213.81 = 57,636.35 : x
  2. Step 2: Convert to fraction form
    87,798.27/121,213.81 = 57,636.35/x
  3. Step 3: Cross multiply
    87,798.27x = 121,213.81 × 57,636.35
  4. Step 4: Simplify right side
    87,798.27x = 6,986,321,577.99
  5. Step 5: Solve for x
    x = 6,986,321,577.99/87,798.27
  6. Step 6: Final answer
    x = 79,572.43

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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.