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Finding the Fourth Proportional to 65,907.66, 98,878.35 and 19,160.54

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Solution

The fourth proportional to 65,907.66, 98,878.35 and 19,160.54 is: 28,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,907.66 : 98,878.35 = 19,160.54 : x
  2. Step 2: Convert to fraction form
    65,907.66/98,878.35 = 19,160.54/x
  3. Step 3: Cross multiply
    65,907.66x = 98,878.35 × 19,160.54
  4. Step 4: Simplify right side
    65,907.66x = 1,894,562,085.92
  5. Step 5: Solve for x
    x = 1,894,562,085.92/65,907.66
  6. Step 6: Final answer
    x = 28,745.70

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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.