Home / 77,669.25-107,491.71-75,806.20

Finding the Fourth Proportional to 77,669.25, 107,491.71 and 75,806.20

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Solution

The fourth proportional to 77,669.25, 107,491.71 and 75,806.20 is: 104,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,669.25 : 107,491.71 = 75,806.20 : x
  2. Step 2: Convert to fraction form
    77,669.25/107,491.71 = 75,806.20/x
  3. Step 3: Cross multiply
    77,669.25x = 107,491.71 × 75,806.20
  4. Step 4: Simplify right side
    77,669.25x = 8,148,537,454.19
  5. Step 5: Solve for x
    x = 8,148,537,454.19/77,669.25
  6. Step 6: Final answer
    x = 104,913.31

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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.