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Finding the Fourth Proportional to 45,579.60, 68,320.80 and 17,488.80

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Solution

The fourth proportional to 45,579.60, 68,320.80 and 17,488.80 is: 26,214.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,579.60 : 68,320.80 = 17,488.80 : x
  2. Step 2: Convert to fraction form
    45,579.60/68,320.80 = 17,488.80/x
  3. Step 3: Cross multiply
    45,579.60x = 68,320.80 × 17,488.80
  4. Step 4: Simplify right side
    45,579.60x = 1,194,848,807.04
  5. Step 5: Solve for x
    x = 1,194,848,807.04/45,579.60
  6. Step 6: Final answer
    x = 26,214.55

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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.