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Finding the Fourth Proportional to 78,522.87, 108,380.81 and 44,551.25

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Solution

The fourth proportional to 78,522.87, 108,380.81 and 44,551.25 is: 61,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,522.87 : 108,380.81 = 44,551.25 : x
  2. Step 2: Convert to fraction form
    78,522.87/108,380.81 = 44,551.25/x
  3. Step 3: Cross multiply
    78,522.87x = 108,380.81 × 44,551.25
  4. Step 4: Simplify right side
    78,522.87x = 4,828,500,561.51
  5. Step 5: Solve for x
    x = 4,828,500,561.51/78,522.87
  6. Step 6: Final answer
    x = 61,491.65

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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.