Home / 87,660,012.80-131,490,019.20-39,790,956.80

Finding the Fourth Proportional to 87,660,012.80, 131,490,019.20 and 39,790,956.80

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Solution

The fourth proportional to 87,660,012.80, 131,490,019.20 and 39,790,956.80 is: 59,686,435.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,660,012.80 : 131,490,019.20 = 39,790,956.80 : x
  2. Step 2: Convert to fraction form
    87,660,012.80/131,490,019.20 = 39,790,956.80/x
  3. Step 3: Cross multiply
    87,660,012.80x = 131,490,019.20 × 39,790,956.80
  4. Step 4: Simplify right side
    87,660,012.80x = 5,232,113,673,618,370
  5. Step 5: Solve for x
    x = 5,232,113,673,618,370/87,660,012.80
  6. Step 6: Final answer
    x = 59,686,435.20

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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.