Home / 280,040,981.10-420,058,092.60-72,761,050.41

Finding the Fourth Proportional to 280,040,981.10, 420,058,092.60 and 72,761,050.41

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Solution

The fourth proportional to 280,040,981.10, 420,058,092.60 and 72,761,050.41 is: 109,140,697.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,040,981.10 : 420,058,092.60 = 72,761,050.41 : x
  2. Step 2: Convert to fraction form
    280,040,981.10/420,058,092.60 = 72,761,050.41/x
  3. Step 3: Cross multiply
    280,040,981.10x = 420,058,092.60 × 72,761,050.41
  4. Step 4: Simplify right side
    280,040,981.10x = 30,563,868,050,797,048
  5. Step 5: Solve for x
    x = 30,563,868,050,797,048/280,040,981.10
  6. Step 6: Final answer
    x = 109,140,697.66

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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.