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Finding the Fourth Proportional to 101,561.70, 152,356.73 and 42,383.81

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Solution

The fourth proportional to 101,561.70, 152,356.73 and 42,383.81 is: 63,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,561.70 : 152,356.73 = 42,383.81 : x
  2. Step 2: Convert to fraction form
    101,561.70/152,356.73 = 42,383.81/x
  3. Step 3: Cross multiply
    101,561.70x = 152,356.73 × 42,383.81
  4. Step 4: Simplify right side
    101,561.70x = 6,457,457,722.84
  5. Step 5: Solve for x
    x = 6,457,457,722.84/101,561.70
  6. Step 6: Final answer
    x = 63,581.62

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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.