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Finding the Fourth Proportional to 64,491.67, 89,004.09 and 35,816.86

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Solution

The fourth proportional to 64,491.67, 89,004.09 and 35,816.86 is: 49,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,491.67 : 89,004.09 = 35,816.86 : x
  2. Step 2: Convert to fraction form
    64,491.67/89,004.09 = 35,816.86/x
  3. Step 3: Cross multiply
    64,491.67x = 89,004.09 × 35,816.86
  4. Step 4: Simplify right side
    64,491.67x = 3,187,847,030.96
  5. Step 5: Solve for x
    x = 3,187,847,030.96/64,491.67
  6. Step 6: Final answer
    x = 49,430.37

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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.