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Finding the Fourth Proportional to 78,912.06, 108,897.92 and 43,102.06

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Solution

The fourth proportional to 78,912.06, 108,897.92 and 43,102.06 is: 59,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,912.06 : 108,897.92 = 43,102.06 : x
  2. Step 2: Convert to fraction form
    78,912.06/108,897.92 = 43,102.06/x
  3. Step 3: Cross multiply
    78,912.06x = 108,897.92 × 43,102.06
  4. Step 4: Simplify right side
    78,912.06x = 4,693,724,355.59
  5. Step 5: Solve for x
    x = 4,693,724,355.59/78,912.06
  6. Step 6: Final answer
    x = 59,480.45

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1.5x scale

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.