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Finding the Fourth Proportional to 65,020.94, 89,736.20 and 36,728.45

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Solution

The fourth proportional to 65,020.94, 89,736.20 and 36,728.45 is: 50,689.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,020.94 : 89,736.20 = 36,728.45 : x
  2. Step 2: Convert to fraction form
    65,020.94/89,736.20 = 36,728.45/x
  3. Step 3: Cross multiply
    65,020.94x = 89,736.20 × 36,728.45
  4. Step 4: Simplify right side
    65,020.94x = 3,295,871,534.89
  5. Step 5: Solve for x
    x = 3,295,871,534.89/65,020.94
  6. Step 6: Final answer
    x = 50,689.39

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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.