Home / 85,395,940.80-128,093,911.20-39,337,720.80

Finding the Fourth Proportional to 85,395,940.80, 128,093,911.20 and 39,337,720.80

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Solution

The fourth proportional to 85,395,940.80, 128,093,911.20 and 39,337,720.80 is: 59,006,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,395,940.80 : 128,093,911.20 = 39,337,720.80 : x
  2. Step 2: Convert to fraction form
    85,395,940.80/128,093,911.20 = 39,337,720.80/x
  3. Step 3: Cross multiply
    85,395,940.80x = 128,093,911.20 × 39,337,720.80
  4. Step 4: Simplify right side
    85,395,940.80x = 5,038,922,514,965,593
  5. Step 5: Solve for x
    x = 5,038,922,514,965,593/85,395,940.80
  6. Step 6: Final answer
    x = 59,006,581.20

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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.