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Finding the Fourth Proportional to 70,957.11, 97,921.56 and 39,127.17

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Solution

The fourth proportional to 70,957.11, 97,921.56 and 39,127.17 is: 53,995.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,957.11 : 97,921.56 = 39,127.17 : x
  2. Step 2: Convert to fraction form
    70,957.11/97,921.56 = 39,127.17/x
  3. Step 3: Cross multiply
    70,957.11x = 97,921.56 × 39,127.17
  4. Step 4: Simplify right side
    70,957.11x = 3,831,393,524.79
  5. Step 5: Solve for x
    x = 3,831,393,524.79/70,957.11
  6. Step 6: Final answer
    x = 53,995.91

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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.