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Finding the Fourth Proportional to 78,902.67, 108,887.58 and 43,092.38

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Solution

The fourth proportional to 78,902.67, 108,887.58 and 43,092.38 is: 59,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,902.67 : 108,887.58 = 43,092.38 : x
  2. Step 2: Convert to fraction form
    78,902.67/108,887.58 = 43,092.38/x
  3. Step 3: Cross multiply
    78,902.67x = 108,887.58 × 43,092.38
  4. Step 4: Simplify right side
    78,902.67x = 4,692,224,430.20
  5. Step 5: Solve for x
    x = 4,692,224,430.20/78,902.67
  6. Step 6: Final answer
    x = 59,468.51

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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.