Home / 87,821.21-131,737.69-30,888.29

Finding the Fourth Proportional to 87,821.21, 131,737.69 and 30,888.29

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Solution

The fourth proportional to 87,821.21, 131,737.69 and 30,888.29 is: 46,334.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,821.21 : 131,737.69 = 30,888.29 : x
  2. Step 2: Convert to fraction form
    87,821.21/131,737.69 = 30,888.29/x
  3. Step 3: Cross multiply
    87,821.21x = 131,737.69 × 30,888.29
  4. Step 4: Simplify right side
    87,821.21x = 4,069,151,599.58
  5. Step 5: Solve for x
    x = 4,069,151,599.58/87,821.21
  6. Step 6: Final answer
    x = 46,334.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.