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Finding the Fourth Proportional to 65,128.63, 89,877.50 and 36,833.71

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Solution

The fourth proportional to 65,128.63, 89,877.50 and 36,833.71 is: 50,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,128.63 : 89,877.50 = 36,833.71 : x
  2. Step 2: Convert to fraction form
    65,128.63/89,877.50 = 36,833.71/x
  3. Step 3: Cross multiply
    65,128.63x = 89,877.50 × 36,833.71
  4. Step 4: Simplify right side
    65,128.63x = 3,310,521,413.22
  5. Step 5: Solve for x
    x = 3,310,521,413.22/65,128.63
  6. Step 6: Final answer
    x = 50,830.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.