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Finding the Fourth Proportional to 64,238.85, 88,684.62 and 38,749.77

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Solution

The fourth proportional to 64,238.85, 88,684.62 and 38,749.77 is: 53,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,238.85 : 88,684.62 = 38,749.77 : x
  2. Step 2: Convert to fraction form
    64,238.85/88,684.62 = 38,749.77/x
  3. Step 3: Cross multiply
    64,238.85x = 88,684.62 × 38,749.77
  4. Step 4: Simplify right side
    64,238.85x = 3,436,508,627.54
  5. Step 5: Solve for x
    x = 3,436,508,627.54/64,238.85
  6. Step 6: Final answer
    x = 53,495.80

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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.