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Finding the Fourth Proportional to 74,881, 103,347.30 and 45,090.28

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Solution

The fourth proportional to 74,881, 103,347.30 and 45,090.28 is: 62,231.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,881 : 103,347.30 = 45,090.28 : x
  2. Step 2: Convert to fraction form
    74,881/103,347.30 = 45,090.28/x
  3. Step 3: Cross multiply
    74,881x = 103,347.30 × 45,090.28
  4. Step 4: Simplify right side
    74,881x = 4,659,958,694.24
  5. Step 5: Solve for x
    x = 4,659,958,694.24/74,881
  6. Step 6: Final answer
    x = 62,231.52

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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.