Home / 87,276,963.78-120,557,178.68-64,691,123.00

Finding the Fourth Proportional to 87,276,963.78, 120,557,178.68 and 64,691,123.00

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Solution

The fourth proportional to 87,276,963.78, 120,557,178.68 and 64,691,123.00 is: 89,358,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,276,963.78 : 120,557,178.68 = 64,691,123.00 : x
  2. Step 2: Convert to fraction form
    87,276,963.78/120,557,178.68 = 64,691,123.00/x
  3. Step 3: Cross multiply
    87,276,963.78x = 120,557,178.68 × 64,691,123.00
  4. Step 4: Simplify right side
    87,276,963.78x = 7,798,979,274,415,470
  5. Step 5: Solve for x
    x = 7,798,979,274,415,470/87,276,963.78
  6. Step 6: Final answer
    x = 89,358,966.40

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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.