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Finding the Fourth Proportional to 70,426.44, 105,567.48 and 30,976.20

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Solution

The fourth proportional to 70,426.44, 105,567.48 and 30,976.20 is: 46,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,426.44 : 105,567.48 = 30,976.20 : x
  2. Step 2: Convert to fraction form
    70,426.44/105,567.48 = 30,976.20/x
  3. Step 3: Cross multiply
    70,426.44x = 105,567.48 × 30,976.20
  4. Step 4: Simplify right side
    70,426.44x = 3,270,079,373.98
  5. Step 5: Solve for x
    x = 3,270,079,373.98/70,426.44
  6. Step 6: Final answer
    x = 46,432.55

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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.