Home / 78,082,670.76-107,691,255.60-68,643,279

Finding the Fourth Proportional to 78,082,670.76, 107,691,255.60 and 68,643,279

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Solution

The fourth proportional to 78,082,670.76, 107,691,255.60 and 68,643,279 is: 94,672,490.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,082,670.76 : 107,691,255.60 = 68,643,279 : x
  2. Step 2: Convert to fraction form
    78,082,670.76/107,691,255.60 = 68,643,279/x
  3. Step 3: Cross multiply
    78,082,670.76x = 107,691,255.60 × 68,643,279
  4. Step 4: Simplify right side
    78,082,670.76x = 7,392,280,904,011,112
  5. Step 5: Solve for x
    x = 7,392,280,904,011,112/78,082,670.76
  6. Step 6: Final answer
    x = 94,672,490.48

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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.