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Finding the Fourth Proportional to 65,673.65, 90,568.13 and 52,289.09

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Solution

The fourth proportional to 65,673.65, 90,568.13 and 52,289.09 is: 72,109.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,673.65 : 90,568.13 = 52,289.09 : x
  2. Step 2: Convert to fraction form
    65,673.65/90,568.13 = 52,289.09/x
  3. Step 3: Cross multiply
    65,673.65x = 90,568.13 × 52,289.09
  4. Step 4: Simplify right side
    65,673.65x = 4,735,724,839.26
  5. Step 5: Solve for x
    x = 4,735,724,839.26/65,673.65
  6. Step 6: Final answer
    x = 72,109.97

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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.