Home / 81,642.71-122,438.14-26,225.75

Finding the Fourth Proportional to 81,642.71, 122,438.14 and 26,225.75

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Solution

The fourth proportional to 81,642.71, 122,438.14 and 26,225.75 is: 39,330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,642.71 : 122,438.14 = 26,225.75 : x
  2. Step 2: Convert to fraction form
    81,642.71/122,438.14 = 26,225.75/x
  3. Step 3: Cross multiply
    81,642.71x = 122,438.14 × 26,225.75
  4. Step 4: Simplify right side
    81,642.71x = 3,211,032,050.11
  5. Step 5: Solve for x
    x = 3,211,032,050.11/81,642.71
  6. Step 6: Final answer
    x = 39,330.30

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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.