Home / 315,046,029.72-472,565,243.25-81,856,107.70

Finding the Fourth Proportional to 315,046,029.72, 472,565,243.25 and 81,856,107.70

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Solution

The fourth proportional to 315,046,029.72, 472,565,243.25 and 81,856,107.70 is: 122,783,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,046,029.72 : 472,565,243.25 = 81,856,107.70 : x
  2. Step 2: Convert to fraction form
    315,046,029.72/472,565,243.25 = 81,856,107.70/x
  3. Step 3: Cross multiply
    315,046,029.72x = 472,565,243.25 × 81,856,107.70
  4. Step 4: Simplify right side
    315,046,029.72x = 38,682,351,445,567,288
  5. Step 5: Solve for x
    x = 38,682,351,445,567,288/315,046,029.72
  6. Step 6: Final answer
    x = 122,783,173.87

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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.