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Finding the Fourth Proportional to 68,430.49, 102,645.73 and 26,330.40

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Solution

The fourth proportional to 68,430.49, 102,645.73 and 26,330.40 is: 39,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,430.49 : 102,645.73 = 26,330.40 : x
  2. Step 2: Convert to fraction form
    68,430.49/102,645.73 = 26,330.40/x
  3. Step 3: Cross multiply
    68,430.49x = 102,645.73 × 26,330.40
  4. Step 4: Simplify right side
    68,430.49x = 2,702,703,028.90
  5. Step 5: Solve for x
    x = 2,702,703,028.90/68,430.49
  6. Step 6: Final answer
    x = 39,495.60

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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.