Home / 87,276,964.78-120,557,180.06-64,691,124

Finding the Fourth Proportional to 87,276,964.78, 120,557,180.06 and 64,691,124

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Solution

The fourth proportional to 87,276,964.78, 120,557,180.06 and 64,691,124 is: 89,358,967.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,276,964.78 : 120,557,180.06 = 64,691,124 : x
  2. Step 2: Convert to fraction form
    87,276,964.78/120,557,180.06 = 64,691,124/x
  3. Step 3: Cross multiply
    87,276,964.78x = 120,557,180.06 × 64,691,124
  4. Step 4: Simplify right side
    87,276,964.78x = 7,798,979,484,351,788
  5. Step 5: Solve for x
    x = 7,798,979,484,351,788/87,276,964.78
  6. Step 6: Final answer
    x = 89,358,967.79

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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.