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Finding the Fourth Proportional to 39,124.80, 54,000 and 25,698.24

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Solution

The fourth proportional to 39,124.80, 54,000 and 25,698.24 is: 35,468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,124.80 : 54,000 = 25,698.24 : x
  2. Step 2: Convert to fraction form
    39,124.80/54,000 = 25,698.24/x
  3. Step 3: Cross multiply
    39,124.80x = 54,000 × 25,698.24
  4. Step 4: Simplify right side
    39,124.80x = 1,387,704,960
  5. Step 5: Solve for x
    x = 1,387,704,960/39,124.80
  6. Step 6: Final answer
    x = 35,468.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.