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Finding the Fourth Proportional to 78,897.57, 108,845.62 and 48,247.45

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Solution

The fourth proportional to 78,897.57, 108,845.62 and 48,247.45 is: 66,561.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,897.57 : 108,845.62 = 48,247.45 : x
  2. Step 2: Convert to fraction form
    78,897.57/108,845.62 = 48,247.45/x
  3. Step 3: Cross multiply
    78,897.57x = 108,845.62 × 48,247.45
  4. Step 4: Simplify right side
    78,897.57x = 5,251,523,488.05
  5. Step 5: Solve for x
    x = 5,251,523,488.05/78,897.57
  6. Step 6: Final answer
    x = 66,561.28

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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.