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Finding the Fourth Proportional to 65,396.50, 90,247.17 and 35,588.50

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Solution

The fourth proportional to 65,396.50, 90,247.17 and 35,588.50 is: 49,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,396.50 : 90,247.17 = 35,588.50 : x
  2. Step 2: Convert to fraction form
    65,396.50/90,247.17 = 35,588.50/x
  3. Step 3: Cross multiply
    65,396.50x = 90,247.17 × 35,588.50
  4. Step 4: Simplify right side
    65,396.50x = 3,211,761,409.55
  5. Step 5: Solve for x
    x = 3,211,761,409.55/65,396.50
  6. Step 6: Final answer
    x = 49,112.13

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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.