Home / 68,323.90-102,485.40-31,805.14

Finding the Fourth Proportional to 68,323.90, 102,485.40 and 31,805.14

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Solution

The fourth proportional to 68,323.90, 102,485.40 and 31,805.14 is: 47,707.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,323.90 : 102,485.40 = 31,805.14 : x
  2. Step 2: Convert to fraction form
    68,323.90/102,485.40 = 31,805.14/x
  3. Step 3: Cross multiply
    68,323.90x = 102,485.40 × 31,805.14
  4. Step 4: Simplify right side
    68,323.90x = 3,259,562,494.96
  5. Step 5: Solve for x
    x = 3,259,562,494.96/68,323.90
  6. Step 6: Final answer
    x = 47,707.50

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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.