Home / 78,642,006.30-117,963,009.45-51,432,227.10

Finding the Fourth Proportional to 78,642,006.30, 117,963,009.45 and 51,432,227.10

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Solution

The fourth proportional to 78,642,006.30, 117,963,009.45 and 51,432,227.10 is: 77,148,340.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,642,006.30 : 117,963,009.45 = 51,432,227.10 : x
  2. Step 2: Convert to fraction form
    78,642,006.30/117,963,009.45 = 51,432,227.10/x
  3. Step 3: Cross multiply
    78,642,006.30x = 117,963,009.45 × 51,432,227.10
  4. Step 4: Simplify right side
    78,642,006.30x = 6,067,100,291,431,846
  5. Step 5: Solve for x
    x = 6,067,100,291,431,846/78,642,006.30
  6. Step 6: Final answer
    x = 77,148,340.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.