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Finding the Fourth Proportional to 77,273.88, 106,621.56 and 45,431.16

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Solution

The fourth proportional to 77,273.88, 106,621.56 and 45,431.16 is: 62,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,273.88 : 106,621.56 = 45,431.16 : x
  2. Step 2: Convert to fraction form
    77,273.88/106,621.56 = 45,431.16/x
  3. Step 3: Cross multiply
    77,273.88x = 106,621.56 × 45,431.16
  4. Step 4: Simplify right side
    77,273.88x = 4,843,941,151.81
  5. Step 5: Solve for x
    x = 4,843,941,151.81/77,273.88
  6. Step 6: Final answer
    x = 62,685.36

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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.