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Finding the Fourth Proportional to 70,203.31, 96,880.32 and 38,372.40

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Solution

The fourth proportional to 70,203.31, 96,880.32 and 38,372.40 is: 52,953.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,203.31 : 96,880.32 = 38,372.40 : x
  2. Step 2: Convert to fraction form
    70,203.31/96,880.32 = 38,372.40/x
  3. Step 3: Cross multiply
    70,203.31x = 96,880.32 × 38,372.40
  4. Step 4: Simplify right side
    70,203.31x = 3,717,530,391.17
  5. Step 5: Solve for x
    x = 3,717,530,391.17/70,203.31
  6. Step 6: Final answer
    x = 52,953.78

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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.