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Finding the Fourth Proportional to 53,998.40, 80,997.60 and 18,925.40

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Solution

The fourth proportional to 53,998.40, 80,997.60 and 18,925.40 is: 28,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,998.40 : 80,997.60 = 18,925.40 : x
  2. Step 2: Convert to fraction form
    53,998.40/80,997.60 = 18,925.40/x
  3. Step 3: Cross multiply
    53,998.40x = 80,997.60 × 18,925.40
  4. Step 4: Simplify right side
    53,998.40x = 1,532,911,979.04
  5. Step 5: Solve for x
    x = 1,532,911,979.04/53,998.40
  6. Step 6: Final answer
    x = 28,388.10

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1.5x scale

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.