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Finding the Fourth Proportional to 72,893.83, 100,593.95 and 40,630.49

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Solution

The fourth proportional to 72,893.83, 100,593.95 and 40,630.49 is: 56,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,893.83 : 100,593.95 = 40,630.49 : x
  2. Step 2: Convert to fraction form
    72,893.83/100,593.95 = 40,630.49/x
  3. Step 3: Cross multiply
    72,893.83x = 100,593.95 × 40,630.49
  4. Step 4: Simplify right side
    72,893.83x = 4,087,181,185.40
  5. Step 5: Solve for x
    x = 4,087,181,185.40/72,893.83
  6. Step 6: Final answer
    x = 56,070.33

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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.