Home / 30,571,233.89-42,172,223.06-18,172,508.27

Finding the Fourth Proportional to 30,571,233.89, 42,172,223.06 and 18,172,508.27

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Solution

The fourth proportional to 30,571,233.89, 42,172,223.06 and 18,172,508.27 is: 25,068,503.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571,233.89 : 42,172,223.06 = 18,172,508.27 : x
  2. Step 2: Convert to fraction form
    30,571,233.89/42,172,223.06 = 18,172,508.27/x
  3. Step 3: Cross multiply
    30,571,233.89x = 42,172,223.06 × 18,172,508.27
  4. Step 4: Simplify right side
    30,571,233.89x = 766,375,072,156,704.88
  5. Step 5: Solve for x
    x = 766,375,072,156,704.88/30,571,233.89
  6. Step 6: Final answer
    x = 25,068,503.12

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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.