Home / 47,941,861-71,904,918.30-20,640,803.72

Finding the Fourth Proportional to 47,941,861, 71,904,918.30 and 20,640,803.72

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Solution

The fourth proportional to 47,941,861, 71,904,918.30 and 20,640,803.72 is: 30,957,815.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,941,861 : 71,904,918.30 = 20,640,803.72 : x
  2. Step 2: Convert to fraction form
    47,941,861/71,904,918.30 = 20,640,803.72/x
  3. Step 3: Cross multiply
    47,941,861x = 71,904,918.30 × 20,640,803.72
  4. Step 4: Simplify right side
    47,941,861x = 1,484,175,305,132,936
  5. Step 5: Solve for x
    x = 1,484,175,305,132,936/47,941,861
  6. Step 6: Final answer
    x = 30,957,815.87

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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.