Home / 87,570,009.20-131,429,663.40-39,122,418.80

Finding the Fourth Proportional to 87,570,009.20, 131,429,663.40 and 39,122,418.80

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Solution

The fourth proportional to 87,570,009.20, 131,429,663.40 and 39,122,418.80 is: 58,716,978.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,570,009.20 : 131,429,663.40 = 39,122,418.80 : x
  2. Step 2: Convert to fraction form
    87,570,009.20/131,429,663.40 = 39,122,418.80/x
  3. Step 3: Cross multiply
    87,570,009.20x = 131,429,663.40 × 39,122,418.80
  4. Step 4: Simplify right side
    87,570,009.20x = 5,141,846,334,277,832
  5. Step 5: Solve for x
    x = 5,141,846,334,277,832/87,570,009.20
  6. Step 6: Final answer
    x = 58,716,978.35

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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.