Home / 87,087.51-120,069.44-56,406.46

Finding the Fourth Proportional to 87,087.51, 120,069.44 and 56,406.46

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Solution

The fourth proportional to 87,087.51, 120,069.44 and 56,406.46 is: 77,768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,087.51 : 120,069.44 = 56,406.46 : x
  2. Step 2: Convert to fraction form
    87,087.51/120,069.44 = 56,406.46/x
  3. Step 3: Cross multiply
    87,087.51x = 120,069.44 × 56,406.46
  4. Step 4: Simplify right side
    87,087.51x = 6,772,692,064.58
  5. Step 5: Solve for x
    x = 6,772,692,064.58/87,087.51
  6. Step 6: Final answer
    x = 77,768.81

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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.