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Finding the Fourth Proportional to 89,890.89, 124,051.90 and 49,607.71

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Solution

The fourth proportional to 89,890.89, 124,051.90 and 49,607.71 is: 68,460.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,890.89 : 124,051.90 = 49,607.71 : x
  2. Step 2: Convert to fraction form
    89,890.89/124,051.90 = 49,607.71/x
  3. Step 3: Cross multiply
    89,890.89x = 124,051.90 × 49,607.71
  4. Step 4: Simplify right side
    89,890.89x = 6,153,930,680.15
  5. Step 5: Solve for x
    x = 6,153,930,680.15/89,890.89
  6. Step 6: Final answer
    x = 68,460.00

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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.