Home / 87,840.11-121,186.73-57,642.23

Finding the Fourth Proportional to 87,840.11, 121,186.73 and 57,642.23

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Solution

The fourth proportional to 87,840.11, 121,186.73 and 57,642.23 is: 79,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840.11 : 121,186.73 = 57,642.23 : x
  2. Step 2: Convert to fraction form
    87,840.11/121,186.73 = 57,642.23/x
  3. Step 3: Cross multiply
    87,840.11x = 121,186.73 × 57,642.23
  4. Step 4: Simplify right side
    87,840.11x = 6,985,473,810.68
  5. Step 5: Solve for x
    x = 6,985,473,810.68/87,840.11
  6. Step 6: Final answer
    x = 79,524.87

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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.