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Finding the Fourth Proportional to 88,203.48, 121,730.74 and 49,965.64

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Solution

The fourth proportional to 88,203.48, 121,730.74 and 49,965.64 is: 68,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,203.48 : 121,730.74 = 49,965.64 : x
  2. Step 2: Convert to fraction form
    88,203.48/121,730.74 = 49,965.64/x
  3. Step 3: Cross multiply
    88,203.48x = 121,730.74 × 49,965.64
  4. Step 4: Simplify right side
    88,203.48x = 6,082,354,331.77
  5. Step 5: Solve for x
    x = 6,082,354,331.77/88,203.48
  6. Step 6: Final answer
    x = 68,958.21

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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.