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Finding the Fourth Proportional to 78,505.08, 108,262.54 and 60,571.68

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Solution

The fourth proportional to 78,505.08, 108,262.54 and 60,571.68 is: 83,531.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,505.08 : 108,262.54 = 60,571.68 : x
  2. Step 2: Convert to fraction form
    78,505.08/108,262.54 = 60,571.68/x
  3. Step 3: Cross multiply
    78,505.08x = 108,262.54 × 60,571.68
  4. Step 4: Simplify right side
    78,505.08x = 6,557,643,928.87
  5. Step 5: Solve for x
    x = 6,557,643,928.87/78,505.08
  6. Step 6: Final answer
    x = 83,531.46

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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.