Home / 78,082,651.28-107,691,228.78-68,643,259.45

Finding the Fourth Proportional to 78,082,651.28, 107,691,228.78 and 68,643,259.45

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Solution

The fourth proportional to 78,082,651.28, 107,691,228.78 and 68,643,259.45 is: 94,672,463.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,082,651.28 : 107,691,228.78 = 68,643,259.45 : x
  2. Step 2: Convert to fraction form
    78,082,651.28/107,691,228.78 = 68,643,259.45/x
  3. Step 3: Cross multiply
    78,082,651.28x = 107,691,228.78 × 68,643,259.45
  4. Step 4: Simplify right side
    78,082,651.28x = 7,392,276,957,108,208
  5. Step 5: Solve for x
    x = 7,392,276,957,108,208/78,082,651.28
  6. Step 6: Final answer
    x = 94,672,463.55

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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.