Home / 85,929,717.03-128,891,079.99-21,231,892.86

Finding the Fourth Proportional to 85,929,717.03, 128,891,079.99 and 21,231,892.86

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Solution

The fourth proportional to 85,929,717.03, 128,891,079.99 and 21,231,892.86 is: 31,846,975.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,929,717.03 : 128,891,079.99 = 21,231,892.86 : x
  2. Step 2: Convert to fraction form
    85,929,717.03/128,891,079.99 = 21,231,892.86/x
  3. Step 3: Cross multiply
    85,929,717.03x = 128,891,079.99 × 21,231,892.86
  4. Step 4: Simplify right side
    85,929,717.03x = 2,736,601,600,957,369.50
  5. Step 5: Solve for x
    x = 2,736,601,600,957,369.50/85,929,717.03
  6. Step 6: Final answer
    x = 31,846,975.59

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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.