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Finding the Fourth Proportional to 72,151.56, 99,596.99 and 64,584.54

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Solution

The fourth proportional to 72,151.56, 99,596.99 and 64,584.54 is: 89,151.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,151.56 : 99,596.99 = 64,584.54 : x
  2. Step 2: Convert to fraction form
    72,151.56/99,596.99 = 64,584.54/x
  3. Step 3: Cross multiply
    72,151.56x = 99,596.99 × 64,584.54
  4. Step 4: Simplify right side
    72,151.56x = 6,432,425,946.00
  5. Step 5: Solve for x
    x = 6,432,425,946.00/72,151.56
  6. Step 6: Final answer
    x = 89,151.59

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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.