Home / 87,578.91-120,899.13-57,365.51

Finding the Fourth Proportional to 87,578.91, 120,899.13 and 57,365.51

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Solution

The fourth proportional to 87,578.91, 120,899.13 and 57,365.51 is: 79,190.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,578.91 : 120,899.13 = 57,365.51 : x
  2. Step 2: Convert to fraction form
    87,578.91/120,899.13 = 57,365.51/x
  3. Step 3: Cross multiply
    87,578.91x = 120,899.13 × 57,365.51
  4. Step 4: Simplify right side
    87,578.91x = 6,935,439,646.51
  5. Step 5: Solve for x
    x = 6,935,439,646.51/87,578.91
  6. Step 6: Final answer
    x = 79,190.75

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1.5x scale

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.