Home / 81,776.79-122,681.66-29,184.90

Finding the Fourth Proportional to 81,776.79, 122,681.66 and 29,184.90

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Solution

The fourth proportional to 81,776.79, 122,681.66 and 29,184.90 is: 43,783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,776.79 : 122,681.66 = 29,184.90 : x
  2. Step 2: Convert to fraction form
    81,776.79/122,681.66 = 29,184.90/x
  3. Step 3: Cross multiply
    81,776.79x = 122,681.66 × 29,184.90
  4. Step 4: Simplify right side
    81,776.79x = 3,580,451,833.01
  5. Step 5: Solve for x
    x = 3,580,451,833.01/81,776.79
  6. Step 6: Final answer
    x = 43,783.23

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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.