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Finding the Fourth Proportional to 45,881.88, 68,809.59 and 12,603.03

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Solution

The fourth proportional to 45,881.88, 68,809.59 and 12,603.03 is: 18,900.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,881.88 : 68,809.59 = 12,603.03 : x
  2. Step 2: Convert to fraction form
    45,881.88/68,809.59 = 12,603.03/x
  3. Step 3: Cross multiply
    45,881.88x = 68,809.59 × 12,603.03
  4. Step 4: Simplify right side
    45,881.88x = 867,209,327.06
  5. Step 5: Solve for x
    x = 867,209,327.06/45,881.88
  6. Step 6: Final answer
    x = 18,900.91

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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.