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Finding the Fourth Proportional to 101,911.49, 140,641.39 and 56,590.23

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Solution

The fourth proportional to 101,911.49, 140,641.39 and 56,590.23 is: 78,096.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,911.49 : 140,641.39 = 56,590.23 : x
  2. Step 2: Convert to fraction form
    101,911.49/140,641.39 = 56,590.23/x
  3. Step 3: Cross multiply
    101,911.49x = 140,641.39 × 56,590.23
  4. Step 4: Simplify right side
    101,911.49x = 7,958,928,678.36
  5. Step 5: Solve for x
    x = 7,958,928,678.36/101,911.49
  6. Step 6: Final answer
    x = 78,096.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.