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Finding the Fourth Proportional to 104,991.78, 157,552.98 and 42,662.28

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Solution

The fourth proportional to 104,991.78, 157,552.98 and 42,662.28 is: 64,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,991.78 : 157,552.98 = 42,662.28 : x
  2. Step 2: Convert to fraction form
    104,991.78/157,552.98 = 42,662.28/x
  3. Step 3: Cross multiply
    104,991.78x = 157,552.98 × 42,662.28
  4. Step 4: Simplify right side
    104,991.78x = 6,721,569,347.59
  5. Step 5: Solve for x
    x = 6,721,569,347.59/104,991.78
  6. Step 6: Final answer
    x = 64,019.96

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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.