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Finding the Fourth Proportional to 63,388.85, 87,485.87 and 36,530.66

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Solution

The fourth proportional to 63,388.85, 87,485.87 and 36,530.66 is: 50,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,388.85 : 87,485.87 = 36,530.66 : x
  2. Step 2: Convert to fraction form
    63,388.85/87,485.87 = 36,530.66/x
  3. Step 3: Cross multiply
    63,388.85x = 87,485.87 × 36,530.66
  4. Step 4: Simplify right side
    63,388.85x = 3,195,916,881.82
  5. Step 5: Solve for x
    x = 3,195,916,881.82/63,388.85
  6. Step 6: Final answer
    x = 50,417.65

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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.