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Finding the Fourth Proportional to 89,855.61, 124,000.77 and 49,569.48

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Solution

The fourth proportional to 89,855.61, 124,000.77 and 49,569.48 is: 68,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,855.61 : 124,000.77 = 49,569.48 : x
  2. Step 2: Convert to fraction form
    89,855.61/124,000.77 = 49,569.48/x
  3. Step 3: Cross multiply
    89,855.61x = 124,000.77 × 49,569.48
  4. Step 4: Simplify right side
    89,855.61x = 6,146,653,688.50
  5. Step 5: Solve for x
    x = 6,146,653,688.50/89,855.61
  6. Step 6: Final answer
    x = 68,405.90

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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.