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Finding the Fourth Proportional to 89,992.90, 124,189.45 and 49,157.05

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Solution

The fourth proportional to 89,992.90, 124,189.45 and 49,157.05 is: 67,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,992.90 : 124,189.45 = 49,157.05 : x
  2. Step 2: Convert to fraction form
    89,992.90/124,189.45 = 49,157.05/x
  3. Step 3: Cross multiply
    89,992.90x = 124,189.45 × 49,157.05
  4. Step 4: Simplify right side
    89,992.90x = 6,104,787,003.12
  5. Step 5: Solve for x
    x = 6,104,787,003.12/89,992.90
  6. Step 6: Final answer
    x = 67,836.32

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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.