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Finding the Fourth Proportional to 64,211.60, 96,315.60 and 29,151.20

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Solution

The fourth proportional to 64,211.60, 96,315.60 and 29,151.20 is: 43,725.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,211.60 : 96,315.60 = 29,151.20 : x
  2. Step 2: Convert to fraction form
    64,211.60/96,315.60 = 29,151.20/x
  3. Step 3: Cross multiply
    64,211.60x = 96,315.60 × 29,151.20
  4. Step 4: Simplify right side
    64,211.60x = 2,807,715,318.72
  5. Step 5: Solve for x
    x = 2,807,715,318.72/64,211.60
  6. Step 6: Final answer
    x = 43,725.98

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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.