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Finding the Fourth Proportional to 77,752.87, 107,302.40 and 43,763.54

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Solution

The fourth proportional to 77,752.87, 107,302.40 and 43,763.54 is: 60,395.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,752.87 : 107,302.40 = 43,763.54 : x
  2. Step 2: Convert to fraction form
    77,752.87/107,302.40 = 43,763.54/x
  3. Step 3: Cross multiply
    77,752.87x = 107,302.40 × 43,763.54
  4. Step 4: Simplify right side
    77,752.87x = 4,695,933,252.16
  5. Step 5: Solve for x
    x = 4,695,933,252.16/77,752.87
  6. Step 6: Final answer
    x = 60,395.63

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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.