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Finding the Fourth Proportional to 83,935.20, 125,902.80 and 64,908.30

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Solution

The fourth proportional to 83,935.20, 125,902.80 and 64,908.30 is: 97,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,935.20 : 125,902.80 = 64,908.30 : x
  2. Step 2: Convert to fraction form
    83,935.20/125,902.80 = 64,908.30/x
  3. Step 3: Cross multiply
    83,935.20x = 125,902.80 × 64,908.30
  4. Step 4: Simplify right side
    83,935.20x = 8,172,136,713.24
  5. Step 5: Solve for x
    x = 8,172,136,713.24/83,935.20
  6. Step 6: Final answer
    x = 97,362.45

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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.