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Finding the Fourth Proportional to 64,079.91, 96,065.12 and 45,300.87

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Solution

The fourth proportional to 64,079.91, 96,065.12 and 45,300.87 is: 67,912.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,079.91 : 96,065.12 = 45,300.87 : x
  2. Step 2: Convert to fraction form
    64,079.91/96,065.12 = 45,300.87/x
  3. Step 3: Cross multiply
    64,079.91x = 96,065.12 × 45,300.87
  4. Step 4: Simplify right side
    64,079.91x = 4,351,833,512.65
  5. Step 5: Solve for x
    x = 4,351,833,512.65/64,079.91
  6. Step 6: Final answer
    x = 67,912.60

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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.