Home / 78,586,477.06-107,663,857.74-75,641,074.34

Finding the Fourth Proportional to 78,586,477.06, 107,663,857.74 and 75,641,074.34

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Solution

The fourth proportional to 78,586,477.06, 107,663,857.74 and 75,641,074.34 is: 103,628,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586,477.06 : 107,663,857.74 = 75,641,074.34 : x
  2. Step 2: Convert to fraction form
    78,586,477.06/107,663,857.74 = 75,641,074.34/x
  3. Step 3: Cross multiply
    78,586,477.06x = 107,663,857.74 × 75,641,074.34
  4. Step 4: Simplify right side
    78,586,477.06x = 8,143,809,867,042,524
  5. Step 5: Solve for x
    x = 8,143,809,867,042,524/78,586,477.06
  6. Step 6: Final answer
    x = 103,628,641.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.