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Finding the Fourth Proportional to 66,602.89, 99,818.21 and 49,831.33

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Solution

The fourth proportional to 66,602.89, 99,818.21 and 49,831.33 is: 74,682.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,602.89 : 99,818.21 = 49,831.33 : x
  2. Step 2: Convert to fraction form
    66,602.89/99,818.21 = 49,831.33/x
  3. Step 3: Cross multiply
    66,602.89x = 99,818.21 × 49,831.33
  4. Step 4: Simplify right side
    66,602.89x = 4,974,074,162.52
  5. Step 5: Solve for x
    x = 4,974,074,162.52/66,602.89
  6. Step 6: Final answer
    x = 74,682.56

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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.