Home / 31,851,913.50-47,778,045.21-7,917,385.50

Finding the Fourth Proportional to 31,851,913.50, 47,778,045.21 and 7,917,385.50

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Solution

The fourth proportional to 31,851,913.50, 47,778,045.21 and 7,917,385.50 is: 11,876,121.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,851,913.50 : 47,778,045.21 = 7,917,385.50 : x
  2. Step 2: Convert to fraction form
    31,851,913.50/47,778,045.21 = 7,917,385.50/x
  3. Step 3: Cross multiply
    31,851,913.50x = 47,778,045.21 × 7,917,385.50
  4. Step 4: Simplify right side
    31,851,913.50x = 378,277,202,363,998.44
  5. Step 5: Solve for x
    x = 378,277,202,363,998.44/31,851,913.50
  6. Step 6: Final answer
    x = 11,876,121.74

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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.