Home / 79,124,949.57-118,676,650.17-20,827,745.40

Finding the Fourth Proportional to 79,124,949.57, 118,676,650.17 and 20,827,745.40

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Solution

The fourth proportional to 79,124,949.57, 118,676,650.17 and 20,827,745.40 is: 31,238,782.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,124,949.57 : 118,676,650.17 = 20,827,745.40 : x
  2. Step 2: Convert to fraction form
    79,124,949.57/118,676,650.17 = 20,827,745.40/x
  3. Step 3: Cross multiply
    79,124,949.57x = 118,676,650.17 × 20,827,745.40
  4. Step 4: Simplify right side
    79,124,949.57x = 2,471,767,054,665,626.50
  5. Step 5: Solve for x
    x = 2,471,767,054,665,626.50/79,124,949.57
  6. Step 6: Final answer
    x = 31,238,782.05

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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.