Home / 105,627.16-145,766.94-57,879.64

Finding the Fourth Proportional to 105,627.16, 145,766.94 and 57,879.64

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Solution

The fourth proportional to 105,627.16, 145,766.94 and 57,879.64 is: 79,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,627.16 : 145,766.94 = 57,879.64 : x
  2. Step 2: Convert to fraction form
    105,627.16/145,766.94 = 57,879.64/x
  3. Step 3: Cross multiply
    105,627.16x = 145,766.94 × 57,879.64
  4. Step 4: Simplify right side
    105,627.16x = 8,436,938,011.10
  5. Step 5: Solve for x
    x = 8,436,938,011.10/105,627.16
  6. Step 6: Final answer
    x = 79,874.70

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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.