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Finding the Fourth Proportional to 64,321.80, 96,504.60 and 40,601.76

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Solution

The fourth proportional to 64,321.80, 96,504.60 and 40,601.76 is: 60,916.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,321.80 : 96,504.60 = 40,601.76 : x
  2. Step 2: Convert to fraction form
    64,321.80/96,504.60 = 40,601.76/x
  3. Step 3: Cross multiply
    64,321.80x = 96,504.60 × 40,601.76
  4. Step 4: Simplify right side
    64,321.80x = 3,918,256,608.10
  5. Step 5: Solve for x
    x = 3,918,256,608.10/64,321.80
  6. Step 6: Final answer
    x = 60,916.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.