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Finding the Fourth Proportional to 74,486.48, 102,811.74 and 43,886.48

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Solution

The fourth proportional to 74,486.48, 102,811.74 and 43,886.48 is: 60,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,486.48 : 102,811.74 = 43,886.48 : x
  2. Step 2: Convert to fraction form
    74,486.48/102,811.74 = 43,886.48/x
  3. Step 3: Cross multiply
    74,486.48x = 102,811.74 × 43,886.48
  4. Step 4: Simplify right side
    74,486.48x = 4,512,045,371.28
  5. Step 5: Solve for x
    x = 4,512,045,371.28/74,486.48
  6. Step 6: Final answer
    x = 60,575.36

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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.