Home / 87,087.47-120,069.43-56,406.41

Finding the Fourth Proportional to 87,087.47, 120,069.43 and 56,406.41

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Solution

The fourth proportional to 87,087.47, 120,069.43 and 56,406.41 is: 77,768.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,087.47 : 120,069.43 = 56,406.41 : x
  2. Step 2: Convert to fraction form
    87,087.47/120,069.43 = 56,406.41/x
  3. Step 3: Cross multiply
    87,087.47x = 120,069.43 × 56,406.41
  4. Step 4: Simplify right side
    87,087.47x = 6,772,685,205.94
  5. Step 5: Solve for x
    x = 6,772,685,205.94/87,087.47
  6. Step 6: Final answer
    x = 77,768.77

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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.