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Finding the Fourth Proportional to 89,871.84, 124,021.08 and 49,589.40

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Solution

The fourth proportional to 89,871.84, 124,021.08 and 49,589.40 is: 68,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,871.84 : 124,021.08 = 49,589.40 : x
  2. Step 2: Convert to fraction form
    89,871.84/124,021.08 = 49,589.40/x
  3. Step 3: Cross multiply
    89,871.84x = 124,021.08 × 49,589.40
  4. Step 4: Simplify right side
    89,871.84x = 6,150,130,944.55
  5. Step 5: Solve for x
    x = 6,150,130,944.55/89,871.84
  6. Step 6: Final answer
    x = 68,432.24

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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.