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Finding the Fourth Proportional to 56,301.78, 84,494.14 and 45,340.76

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Solution

The fourth proportional to 56,301.78, 84,494.14 and 45,340.76 is: 68,044.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,301.78 : 84,494.14 = 45,340.76 : x
  2. Step 2: Convert to fraction form
    56,301.78/84,494.14 = 45,340.76/x
  3. Step 3: Cross multiply
    56,301.78x = 84,494.14 × 45,340.76
  4. Step 4: Simplify right side
    56,301.78x = 3,831,028,621.03
  5. Step 5: Solve for x
    x = 3,831,028,621.03/56,301.78
  6. Step 6: Final answer
    x = 68,044.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.