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Finding the Fourth Proportional to 18,649,060.94, 27,978,070.80 and 7,134,339.92

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Solution

The fourth proportional to 18,649,060.94, 27,978,070.80 and 7,134,339.92 is: 10,703,223.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649,060.94 : 27,978,070.80 = 7,134,339.92 : x
  2. Step 2: Convert to fraction form
    18,649,060.94/27,978,070.80 = 7,134,339.92/x
  3. Step 3: Cross multiply
    18,649,060.94x = 27,978,070.80 × 7,134,339.92
  4. Step 4: Simplify right side
    18,649,060.94x = 199,605,067,393,026.34
  5. Step 5: Solve for x
    x = 199,605,067,393,026.34/18,649,060.94
  6. Step 6: Final answer
    x = 10,703,223.50

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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.