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Finding the Fourth Proportional to 45,654.75, 68,482.15 and 14,490

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Solution

The fourth proportional to 45,654.75, 68,482.15 and 14,490 is: 21,735.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,654.75 : 68,482.15 = 14,490 : x
  2. Step 2: Convert to fraction form
    45,654.75/68,482.15 = 14,490/x
  3. Step 3: Cross multiply
    45,654.75x = 68,482.15 × 14,490
  4. Step 4: Simplify right side
    45,654.75x = 992,306,317.28
  5. Step 5: Solve for x
    x = 992,306,317.28/45,654.75
  6. Step 6: Final answer
    x = 21,735.01

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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.