Home / 68,430.45-102,606.48-21,033.21

Finding the Fourth Proportional to 68,430.45, 102,606.48 and 21,033.21

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Solution

The fourth proportional to 68,430.45, 102,606.48 and 21,033.21 is: 31,537.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,430.45 : 102,606.48 = 21,033.21 : x
  2. Step 2: Convert to fraction form
    68,430.45/102,606.48 = 21,033.21/x
  3. Step 3: Cross multiply
    68,430.45x = 102,606.48 × 21,033.21
  4. Step 4: Simplify right side
    68,430.45x = 2,158,143,641.20
  5. Step 5: Solve for x
    x = 2,158,143,641.20/68,430.45
  6. Step 6: Final answer
    x = 31,537.77

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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.