Home / 72,939,151.80-109,408,727.70-69,579,919.80

Finding the Fourth Proportional to 72,939,151.80, 109,408,727.70 and 69,579,919.80

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Solution

The fourth proportional to 72,939,151.80, 109,408,727.70 and 69,579,919.80 is: 104,369,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,939,151.80 : 109,408,727.70 = 69,579,919.80 : x
  2. Step 2: Convert to fraction form
    72,939,151.80/109,408,727.70 = 69,579,919.80/x
  3. Step 3: Cross multiply
    72,939,151.80x = 109,408,727.70 × 69,579,919.80
  4. Step 4: Simplify right side
    72,939,151.80x = 7,612,650,498,786,038
  5. Step 5: Solve for x
    x = 7,612,650,498,786,038/72,939,151.80
  6. Step 6: Final answer
    x = 104,369,879.70

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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.