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Finding the Fourth Proportional to 81,330.72, 122,014.08 and 25,926.72

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Solution

The fourth proportional to 81,330.72, 122,014.08 and 25,926.72 is: 38,895.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.72 : 122,014.08 = 25,926.72 : x
  2. Step 2: Convert to fraction form
    81,330.72/122,014.08 = 25,926.72/x
  3. Step 3: Cross multiply
    81,330.72x = 122,014.08 × 25,926.72
  4. Step 4: Simplify right side
    81,330.72x = 3,163,424,888.22
  5. Step 5: Solve for x
    x = 3,163,424,888.22/81,330.72
  6. Step 6: Final answer
    x = 38,895.82

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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.