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Finding the Fourth Proportional to 66,903.29, 100,323.13 and 38,831.95

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Solution

The fourth proportional to 66,903.29, 100,323.13 and 38,831.95 is: 58,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,903.29 : 100,323.13 = 38,831.95 : x
  2. Step 2: Convert to fraction form
    66,903.29/100,323.13 = 38,831.95/x
  3. Step 3: Cross multiply
    66,903.29x = 100,323.13 × 38,831.95
  4. Step 4: Simplify right side
    66,903.29x = 3,895,742,072.23
  5. Step 5: Solve for x
    x = 3,895,742,072.23/66,903.29
  6. Step 6: Final answer
    x = 58,229.46

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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.