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Finding the Fourth Proportional to 70,280.20, 96,982.54 and 38,447.20

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Solution

The fourth proportional to 70,280.20, 96,982.54 and 38,447.20 is: 53,054.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,280.20 : 96,982.54 = 38,447.20 : x
  2. Step 2: Convert to fraction form
    70,280.20/96,982.54 = 38,447.20/x
  3. Step 3: Cross multiply
    70,280.20x = 96,982.54 × 38,447.20
  4. Step 4: Simplify right side
    70,280.20x = 3,728,707,111.89
  5. Step 5: Solve for x
    x = 3,728,707,111.89/70,280.20
  6. Step 6: Final answer
    x = 53,054.87

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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.