Home / 39,120,459.21-53,983,524.60-21,715,433.55

Finding the Fourth Proportional to 39,120,459.21, 53,983,524.60 and 21,715,433.55

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Solution

The fourth proportional to 39,120,459.21, 53,983,524.60 and 21,715,433.55 is: 29,965,794.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,120,459.21 : 53,983,524.60 = 21,715,433.55 : x
  2. Step 2: Convert to fraction form
    39,120,459.21/53,983,524.60 = 21,715,433.55/x
  3. Step 3: Cross multiply
    39,120,459.21x = 53,983,524.60 × 21,715,433.55
  4. Step 4: Simplify right side
    39,120,459.21x = 1,172,275,641,246,090.50
  5. Step 5: Solve for x
    x = 1,172,275,641,246,090.50/39,120,459.21
  6. Step 6: Final answer
    x = 29,965,794.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.