Home / 82,518,187.58-123,781,392.78-31,404,167.90

Finding the Fourth Proportional to 82,518,187.58, 123,781,392.78 and 31,404,167.90

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Solution

The fourth proportional to 82,518,187.58, 123,781,392.78 and 31,404,167.90 is: 47,107,816.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,518,187.58 : 123,781,392.78 = 31,404,167.90 : x
  2. Step 2: Convert to fraction form
    82,518,187.58/123,781,392.78 = 31,404,167.90/x
  3. Step 3: Cross multiply
    82,518,187.58x = 123,781,392.78 × 31,404,167.90
  4. Step 4: Simplify right side
    82,518,187.58x = 3,887,251,641,758,967.50
  5. Step 5: Solve for x
    x = 3,887,251,641,758,967.50/82,518,187.58
  6. Step 6: Final answer
    x = 47,107,816.54

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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.