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Finding the Fourth Proportional to 78,313.80, 108,046.74 and 50,036.04

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Solution

The fourth proportional to 78,313.80, 108,046.74 and 50,036.04 is: 69,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,313.80 : 108,046.74 = 50,036.04 : x
  2. Step 2: Convert to fraction form
    78,313.80/108,046.74 = 50,036.04/x
  3. Step 3: Cross multiply
    78,313.80x = 108,046.74 × 50,036.04
  4. Step 4: Simplify right side
    78,313.80x = 5,406,231,004.51
  5. Step 5: Solve for x
    x = 5,406,231,004.51/78,313.80
  6. Step 6: Final answer
    x = 69,032.93

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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.