Home / 87,658,678.38-131,505,950.97-30,143,479.98

Finding the Fourth Proportional to 87,658,678.38, 131,505,950.97 and 30,143,479.98

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Solution

The fourth proportional to 87,658,678.38, 131,505,950.97 and 30,143,479.98 is: 45,221,386.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,658,678.38 : 131,505,950.97 = 30,143,479.98 : x
  2. Step 2: Convert to fraction form
    87,658,678.38/131,505,950.97 = 30,143,479.98/x
  3. Step 3: Cross multiply
    87,658,678.38x = 131,505,950.97 × 30,143,479.98
  4. Step 4: Simplify right side
    87,658,678.38x = 3,964,047,000,315,056.50
  5. Step 5: Solve for x
    x = 3,964,047,000,315,056.50/87,658,678.38
  6. Step 6: Final answer
    x = 45,221,386.79

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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.