Home / 78,446,965.02-108,010,391.32-66,661,375.11

Finding the Fourth Proportional to 78,446,965.02, 108,010,391.32 and 66,661,375.11

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Solution

The fourth proportional to 78,446,965.02, 108,010,391.32 and 66,661,375.11 is: 91,783,298.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,446,965.02 : 108,010,391.32 = 66,661,375.11 : x
  2. Step 2: Convert to fraction form
    78,446,965.02/108,010,391.32 = 66,661,375.11/x
  3. Step 3: Cross multiply
    78,446,965.02x = 108,010,391.32 × 66,661,375.11
  4. Step 4: Simplify right side
    78,446,965.02x = 7,200,121,211,227,101
  5. Step 5: Solve for x
    x = 7,200,121,211,227,101/78,446,965.02
  6. Step 6: Final answer
    x = 91,783,298.56

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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.