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Finding the Fourth Proportional to 39,954,612.80, 59,959,912.80 and 25,612,558.40

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Solution

The fourth proportional to 39,954,612.80, 59,959,912.80 and 25,612,558.40 is: 38,436,782.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,954,612.80 : 59,959,912.80 = 25,612,558.40 : x
  2. Step 2: Convert to fraction form
    39,954,612.80/59,959,912.80 = 25,612,558.40/x
  3. Step 3: Cross multiply
    39,954,612.80x = 59,959,912.80 × 25,612,558.40
  4. Step 4: Simplify right side
    39,954,612.80x = 1,535,726,768,248,907.25
  5. Step 5: Solve for x
    x = 1,535,726,768,248,907.25/39,954,612.80
  6. Step 6: Final answer
    x = 38,436,782.65

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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.