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Finding the Fourth Proportional to 56,894.19, 85,352.28 and 21,831.12

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Solution

The fourth proportional to 56,894.19, 85,352.28 and 21,831.12 is: 32,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,894.19 : 85,352.28 = 21,831.12 : x
  2. Step 2: Convert to fraction form
    56,894.19/85,352.28 = 21,831.12/x
  3. Step 3: Cross multiply
    56,894.19x = 85,352.28 × 21,831.12
  4. Step 4: Simplify right side
    56,894.19x = 1,863,335,866.95
  5. Step 5: Solve for x
    x = 1,863,335,866.95/56,894.19
  6. Step 6: Final answer
    x = 32,750.90

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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.