Home / 78,912.10-108,897.01-43,102.27

Finding the Fourth Proportional to 78,912.10, 108,897.01 and 43,102.27

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Solution

The fourth proportional to 78,912.10, 108,897.01 and 43,102.27 is: 59,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,912.10 : 108,897.01 = 43,102.27 : x
  2. Step 2: Convert to fraction form
    78,912.10/108,897.01 = 43,102.27/x
  3. Step 3: Cross multiply
    78,912.10x = 108,897.01 × 43,102.27
  4. Step 4: Simplify right side
    78,912.10x = 4,693,708,327.21
  5. Step 5: Solve for x
    x = 4,693,708,327.21/78,912.10
  6. Step 6: Final answer
    x = 59,480.21

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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.