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Finding the Fourth Proportional to 45,335, 68,004.94 and 14,172.68

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Solution

The fourth proportional to 45,335, 68,004.94 and 14,172.68 is: 21,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,335 : 68,004.94 = 14,172.68 : x
  2. Step 2: Convert to fraction form
    45,335/68,004.94 = 14,172.68/x
  3. Step 3: Cross multiply
    45,335x = 68,004.94 × 14,172.68
  4. Step 4: Simplify right side
    45,335x = 963,812,253.04
  5. Step 5: Solve for x
    x = 963,812,253.04/45,335
  6. Step 6: Final answer
    x = 21,259.78

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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.