Home / 89,421.84-123,405.17-49,137.05

Finding the Fourth Proportional to 89,421.84, 123,405.17 and 49,137.05

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Solution

The fourth proportional to 89,421.84, 123,405.17 and 49,137.05 is: 67,810.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,421.84 : 123,405.17 = 49,137.05 : x
  2. Step 2: Convert to fraction form
    89,421.84/123,405.17 = 49,137.05/x
  3. Step 3: Cross multiply
    89,421.84x = 123,405.17 × 49,137.05
  4. Step 4: Simplify right side
    89,421.84x = 6,063,765,653.62
  5. Step 5: Solve for x
    x = 6,063,765,653.62/89,421.84
  6. Step 6: Final answer
    x = 67,810.79

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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.