Home / 39,189,198.78-54,081,488.63-21,549,031.74

Finding the Fourth Proportional to 39,189,198.78, 54,081,488.63 and 21,549,031.74

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Solution

The fourth proportional to 39,189,198.78, 54,081,488.63 and 21,549,031.74 is: 29,737,880.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,189,198.78 : 54,081,488.63 = 21,549,031.74 : x
  2. Step 2: Convert to fraction form
    39,189,198.78/54,081,488.63 = 21,549,031.74/x
  3. Step 3: Cross multiply
    39,189,198.78x = 54,081,488.63 × 21,549,031.74
  4. Step 4: Simplify right side
    39,189,198.78x = 1,165,403,715,088,191.50
  5. Step 5: Solve for x
    x = 1,165,403,715,088,191.50/39,189,198.78
  6. Step 6: Final answer
    x = 29,737,880.62

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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.