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Finding the Fourth Proportional to 64,129.68, 96,213.96 and 45,445.86

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Solution

The fourth proportional to 64,129.68, 96,213.96 and 45,445.86 is: 68,182.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,129.68 : 96,213.96 = 45,445.86 : x
  2. Step 2: Convert to fraction form
    64,129.68/96,213.96 = 45,445.86/x
  3. Step 3: Cross multiply
    64,129.68x = 96,213.96 × 45,445.86
  4. Step 4: Simplify right side
    64,129.68x = 4,372,526,156.21
  5. Step 5: Solve for x
    x = 4,372,526,156.21/64,129.68
  6. Step 6: Final answer
    x = 68,182.57

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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.