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Finding the Fourth Proportional to 65,448.17, 90,318.31 and 36,768.63

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Solution

The fourth proportional to 65,448.17, 90,318.31 and 36,768.63 is: 50,740.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,448.17 : 90,318.31 = 36,768.63 : x
  2. Step 2: Convert to fraction form
    65,448.17/90,318.31 = 36,768.63/x
  3. Step 3: Cross multiply
    65,448.17x = 90,318.31 × 36,768.63
  4. Step 4: Simplify right side
    65,448.17x = 3,320,880,769.39
  5. Step 5: Solve for x
    x = 3,320,880,769.39/65,448.17
  6. Step 6: Final answer
    x = 50,740.62

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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.