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Finding the Fourth Proportional to 65,623.71, 90,512.37 and 49,491.69

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Solution

The fourth proportional to 65,623.71, 90,512.37 and 49,491.69 is: 68,262.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,623.71 : 90,512.37 = 49,491.69 : x
  2. Step 2: Convert to fraction form
    65,623.71/90,512.37 = 49,491.69/x
  3. Step 3: Cross multiply
    65,623.71x = 90,512.37 × 49,491.69
  4. Step 4: Simplify right side
    65,623.71x = 4,479,610,157.21
  5. Step 5: Solve for x
    x = 4,479,610,157.21/65,623.71
  6. Step 6: Final answer
    x = 68,262.07

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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.