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Finding the Fourth Proportional to 117,035.80, 161,509.44 and 63,320.79

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Solution

The fourth proportional to 117,035.80, 161,509.44 and 63,320.79 is: 87,382.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,035.80 : 161,509.44 = 63,320.79 : x
  2. Step 2: Convert to fraction form
    117,035.80/161,509.44 = 63,320.79/x
  3. Step 3: Cross multiply
    117,035.80x = 161,509.44 × 63,320.79
  4. Step 4: Simplify right side
    117,035.80x = 10,226,905,333.26
  5. Step 5: Solve for x
    x = 10,226,905,333.26/117,035.80
  6. Step 6: Final answer
    x = 87,382.71

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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.