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Finding the Fourth Proportional to 64,945.92, 89,592.34 and 39,445.50

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Solution

The fourth proportional to 64,945.92, 89,592.34 and 39,445.50 is: 54,414.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,945.92 : 89,592.34 = 39,445.50 : x
  2. Step 2: Convert to fraction form
    64,945.92/89,592.34 = 39,445.50/x
  3. Step 3: Cross multiply
    64,945.92x = 89,592.34 × 39,445.50
  4. Step 4: Simplify right side
    64,945.92x = 3,534,014,647.47
  5. Step 5: Solve for x
    x = 3,534,014,647.47/64,945.92
  6. Step 6: Final answer
    x = 54,414.73

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1.5x scale

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.