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Finding the Fourth Proportional to 61,284.44, 91,903.98 and 21,831.08

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Solution

The fourth proportional to 61,284.44, 91,903.98 and 21,831.08 is: 32,738.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,284.44 : 91,903.98 = 21,831.08 : x
  2. Step 2: Convert to fraction form
    61,284.44/91,903.98 = 21,831.08/x
  3. Step 3: Cross multiply
    61,284.44x = 91,903.98 × 21,831.08
  4. Step 4: Simplify right side
    61,284.44x = 2,006,363,139.70
  5. Step 5: Solve for x
    x = 2,006,363,139.70/61,284.44
  6. Step 6: Final answer
    x = 32,738.54

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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.