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Finding the Fourth Proportional to 101,812.62, 140,496.56 and 56,490.08

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Solution

The fourth proportional to 101,812.62, 140,496.56 and 56,490.08 is: 77,953.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,812.62 : 140,496.56 = 56,490.08 : x
  2. Step 2: Convert to fraction form
    101,812.62/140,496.56 = 56,490.08/x
  3. Step 3: Cross multiply
    101,812.62x = 140,496.56 × 56,490.08
  4. Step 4: Simplify right side
    101,812.62x = 7,936,661,914.12
  5. Step 5: Solve for x
    x = 7,936,661,914.12/101,812.62
  6. Step 6: Final answer
    x = 77,953.62

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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.