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Finding the Fourth Proportional to 74,053.76, 102,196.76 and 40,519.76

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Solution

The fourth proportional to 74,053.76, 102,196.76 and 40,519.76 is: 55,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,053.76 : 102,196.76 = 40,519.76 : x
  2. Step 2: Convert to fraction form
    74,053.76/102,196.76 = 40,519.76/x
  3. Step 3: Cross multiply
    74,053.76x = 102,196.76 × 40,519.76
  4. Step 4: Simplify right side
    74,053.76x = 4,140,988,187.98
  5. Step 5: Solve for x
    x = 4,140,988,187.98/74,053.76
  6. Step 6: Final answer
    x = 55,918.68

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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.