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Finding the Fourth Proportional to 45,124.80, 67,698.88 and 26,420.64

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Solution

The fourth proportional to 45,124.80, 67,698.88 and 26,420.64 is: 39,637.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,124.80 : 67,698.88 = 26,420.64 : x
  2. Step 2: Convert to fraction form
    45,124.80/67,698.88 = 26,420.64/x
  3. Step 3: Cross multiply
    45,124.80x = 67,698.88 × 26,420.64
  4. Step 4: Simplify right side
    45,124.80x = 1,788,647,736.88
  5. Step 5: Solve for x
    x = 1,788,647,736.88/45,124.80
  6. Step 6: Final answer
    x = 39,637.80

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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.