Home / 81,566,215.79-122,346,005.31-20,153,827.89

Finding the Fourth Proportional to 81,566,215.79, 122,346,005.31 and 20,153,827.89

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Solution

The fourth proportional to 81,566,215.79, 122,346,005.31 and 20,153,827.89 is: 30,229,921.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,566,215.79 : 122,346,005.31 = 20,153,827.89 : x
  2. Step 2: Convert to fraction form
    81,566,215.79/122,346,005.31 = 20,153,827.89/x
  3. Step 3: Cross multiply
    81,566,215.79x = 122,346,005.31 × 20,153,827.89
  4. Step 4: Simplify right side
    81,566,215.79x = 2,465,740,334,046,766
  5. Step 5: Solve for x
    x = 2,465,740,334,046,766/81,566,215.79
  6. Step 6: Final answer
    x = 30,229,921.91

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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.