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Finding the Fourth Proportional to 89,874, 124,026.12 and 50,130

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Solution

The fourth proportional to 89,874, 124,026.12 and 50,130 is: 69,179.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,874 : 124,026.12 = 50,130 : x
  2. Step 2: Convert to fraction form
    89,874/124,026.12 = 50,130/x
  3. Step 3: Cross multiply
    89,874x = 124,026.12 × 50,130
  4. Step 4: Simplify right side
    89,874x = 6,217,429,395.60
  5. Step 5: Solve for x
    x = 6,217,429,395.60/89,874
  6. Step 6: Final answer
    x = 69,179.40

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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.