Home / 39,872,109-55,023,532.56-21,537,394.68

Finding the Fourth Proportional to 39,872,109, 55,023,532.56 and 21,537,394.68

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Solution

The fourth proportional to 39,872,109, 55,023,532.56 and 21,537,394.68 is: 29,721,616.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872,109 : 55,023,532.56 = 21,537,394.68 : x
  2. Step 2: Convert to fraction form
    39,872,109/55,023,532.56 = 21,537,394.68/x
  3. Step 3: Cross multiply
    39,872,109x = 55,023,532.56 × 21,537,394.68
  4. Step 4: Simplify right side
    39,872,109x = 1,185,063,537,432,550.75
  5. Step 5: Solve for x
    x = 1,185,063,537,432,550.75/39,872,109
  6. Step 6: Final answer
    x = 29,721,616.62

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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.