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Finding the Fourth Proportional to 77,253.89, 106,563.80 and 45,396.59

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Solution

The fourth proportional to 77,253.89, 106,563.80 and 45,396.59 is: 62,619.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,253.89 : 106,563.80 = 45,396.59 : x
  2. Step 2: Convert to fraction form
    77,253.89/106,563.80 = 45,396.59/x
  3. Step 3: Cross multiply
    77,253.89x = 106,563.80 × 45,396.59
  4. Step 4: Simplify right side
    77,253.89x = 4,837,632,718.11
  5. Step 5: Solve for x
    x = 4,837,632,718.11/77,253.89
  6. Step 6: Final answer
    x = 62,619.93

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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.