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Finding the Fourth Proportional to 64,489.67, 89,001.33 and 35,814.86

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Solution

The fourth proportional to 64,489.67, 89,001.33 and 35,814.86 is: 49,427.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,489.67 : 89,001.33 = 35,814.86 : x
  2. Step 2: Convert to fraction form
    64,489.67/89,001.33 = 35,814.86/x
  3. Step 3: Cross multiply
    64,489.67x = 89,001.33 × 35,814.86
  4. Step 4: Simplify right side
    64,489.67x = 3,187,570,129.67
  5. Step 5: Solve for x
    x = 3,187,570,129.67/64,489.67
  6. Step 6: Final answer
    x = 49,427.61

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1.5x scale

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.