Home / 28,059,691.20-42,121,029.60-21,698,145.60

Finding the Fourth Proportional to 28,059,691.20, 42,121,029.60 and 21,698,145.60

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Solution

The fourth proportional to 28,059,691.20, 42,121,029.60 and 21,698,145.60 is: 32,571,571.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059,691.20 : 42,121,029.60 = 21,698,145.60 : x
  2. Step 2: Convert to fraction form
    28,059,691.20/42,121,029.60 = 21,698,145.60/x
  3. Step 3: Cross multiply
    28,059,691.20x = 42,121,029.60 × 21,698,145.60
  4. Step 4: Simplify right side
    28,059,691.20x = 913,948,233,082,709.88
  5. Step 5: Solve for x
    x = 913,948,233,082,709.88/28,059,691.20
  6. Step 6: Final answer
    x = 32,571,571.32

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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.