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Finding the Fourth Proportional to 70,369.48, 105,542.88 and 30,919.24

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Solution

The fourth proportional to 70,369.48, 105,542.88 and 30,919.24 is: 46,373.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,369.48 : 105,542.88 = 30,919.24 : x
  2. Step 2: Convert to fraction form
    70,369.48/105,542.88 = 30,919.24/x
  3. Step 3: Cross multiply
    70,369.48x = 105,542.88 × 30,919.24
  4. Step 4: Simplify right side
    70,369.48x = 3,263,305,637.01
  5. Step 5: Solve for x
    x = 3,263,305,637.01/70,369.48
  6. Step 6: Final answer
    x = 46,373.88

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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.