Home / 90,711,709.20-136,067,563.80-54,432,003.60

Finding the Fourth Proportional to 90,711,709.20, 136,067,563.80 and 54,432,003.60

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Solution

The fourth proportional to 90,711,709.20, 136,067,563.80 and 54,432,003.60 is: 81,648,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,711,709.20 : 136,067,563.80 = 54,432,003.60 : x
  2. Step 2: Convert to fraction form
    90,711,709.20/136,067,563.80 = 54,432,003.60/x
  3. Step 3: Cross multiply
    90,711,709.20x = 136,067,563.80 × 54,432,003.60
  4. Step 4: Simplify right side
    90,711,709.20x = 7,406,430,122,604,831
  5. Step 5: Solve for x
    x = 7,406,430,122,604,831/90,711,709.20
  6. Step 6: Final answer
    x = 81,648,005.40

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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.