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Finding the Fourth Proportional to 65,300.46, 90,104.64 and 36,621.60

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Solution

The fourth proportional to 65,300.46, 90,104.64 and 36,621.60 is: 50,532.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,300.46 : 90,104.64 = 36,621.60 : x
  2. Step 2: Convert to fraction form
    65,300.46/90,104.64 = 36,621.60/x
  3. Step 3: Cross multiply
    65,300.46x = 90,104.64 × 36,621.60
  4. Step 4: Simplify right side
    65,300.46x = 3,299,776,084.22
  5. Step 5: Solve for x
    x = 3,299,776,084.22/65,300.46
  6. Step 6: Final answer
    x = 50,532.20

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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.