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Finding the Fourth Proportional to 65,121.56, 89,867.76 and 35,313.56

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Solution

The fourth proportional to 65,121.56, 89,867.76 and 35,313.56 is: 48,732.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,121.56 : 89,867.76 = 35,313.56 : x
  2. Step 2: Convert to fraction form
    65,121.56/89,867.76 = 35,313.56/x
  3. Step 3: Cross multiply
    65,121.56x = 89,867.76 × 35,313.56
  4. Step 4: Simplify right side
    65,121.56x = 3,173,550,534.83
  5. Step 5: Solve for x
    x = 3,173,550,534.83/65,121.56
  6. Step 6: Final answer
    x = 48,732.72

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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.