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Finding the Fourth Proportional to 89,866.10, 124,015.65 and 49,579.86

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Solution

The fourth proportional to 89,866.10, 124,015.65 and 49,579.86 is: 68,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,866.10 : 124,015.65 = 49,579.86 : x
  2. Step 2: Convert to fraction form
    89,866.10/124,015.65 = 49,579.86/x
  3. Step 3: Cross multiply
    89,866.10x = 124,015.65 × 49,579.86
  4. Step 4: Simplify right side
    89,866.10x = 6,148,678,564.81
  5. Step 5: Solve for x
    x = 6,148,678,564.81/89,866.10
  6. Step 6: Final answer
    x = 68,420.45

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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.