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Finding the Fourth Proportional to 74,503.98, 102,814.93 and 40,512.48

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Solution

The fourth proportional to 74,503.98, 102,814.93 and 40,512.48 is: 55,906.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,503.98 : 102,814.93 = 40,512.48 : x
  2. Step 2: Convert to fraction form
    74,503.98/102,814.93 = 40,512.48/x
  3. Step 3: Cross multiply
    74,503.98x = 102,814.93 × 40,512.48
  4. Step 4: Simplify right side
    74,503.98x = 4,165,287,795.33
  5. Step 5: Solve for x
    x = 4,165,287,795.33/74,503.98
  6. Step 6: Final answer
    x = 55,906.92

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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.