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Finding the Fourth Proportional to 62,775.08, 94,162.62 and 21,221

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Solution

The fourth proportional to 62,775.08, 94,162.62 and 21,221 is: 31,831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,775.08 : 94,162.62 = 21,221 : x
  2. Step 2: Convert to fraction form
    62,775.08/94,162.62 = 21,221/x
  3. Step 3: Cross multiply
    62,775.08x = 94,162.62 × 21,221
  4. Step 4: Simplify right side
    62,775.08x = 1,998,224,959.02
  5. Step 5: Solve for x
    x = 1,998,224,959.02/62,775.08
  6. Step 6: Final answer
    x = 31,831.50

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1.5x scale

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.