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Finding the Fourth Proportional to 38,138,977.20, 57,208,465.80 and 38,138,977.20

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Solution

The fourth proportional to 38,138,977.20, 57,208,465.80 and 38,138,977.20 is: 57,208,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138,977.20 : 57,208,465.80 = 38,138,977.20 : x
  2. Step 2: Convert to fraction form
    38,138,977.20/57,208,465.80 = 38,138,977.20/x
  3. Step 3: Cross multiply
    38,138,977.20x = 57,208,465.80 × 38,138,977.20
  4. Step 4: Simplify right side
    38,138,977.20x = 2,181,872,372,793,179.75
  5. Step 5: Solve for x
    x = 2,181,872,372,793,179.75/38,138,977.20
  6. Step 6: Final answer
    x = 57,208,465.80

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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.