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Finding the Fourth Proportional to 64,242.91, 96,378.72 and 30,990.88

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Solution

The fourth proportional to 64,242.91, 96,378.72 and 30,990.88 is: 46,493.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,242.91 : 96,378.72 = 30,990.88 : x
  2. Step 2: Convert to fraction form
    64,242.91/96,378.72 = 30,990.88/x
  3. Step 3: Cross multiply
    64,242.91x = 96,378.72 × 30,990.88
  4. Step 4: Simplify right side
    64,242.91x = 2,986,861,346.07
  5. Step 5: Solve for x
    x = 2,986,861,346.07/64,242.91
  6. Step 6: Final answer
    x = 46,493.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.