Home / 38,566,421.56-53,221,514.46-21,163,057.72

Finding the Fourth Proportional to 38,566,421.56, 53,221,514.46 and 21,163,057.72

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Solution

The fourth proportional to 38,566,421.56, 53,221,514.46 and 21,163,057.72 is: 29,204,938.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,566,421.56 : 53,221,514.46 = 21,163,057.72 : x
  2. Step 2: Convert to fraction form
    38,566,421.56/53,221,514.46 = 21,163,057.72/x
  3. Step 3: Cross multiply
    38,566,421.56x = 53,221,514.46 × 21,163,057.72
  4. Step 4: Simplify right side
    38,566,421.56x = 1,126,329,982,462,794.50
  5. Step 5: Solve for x
    x = 1,126,329,982,462,794.50/38,566,421.56
  6. Step 6: Final answer
    x = 29,204,938.83

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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.