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Finding the Fourth Proportional to 53,999.52, 81,018.72 and 18,944.64

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Solution

The fourth proportional to 53,999.52, 81,018.72 and 18,944.64 is: 28,423.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,999.52 : 81,018.72 = 18,944.64 : x
  2. Step 2: Convert to fraction form
    53,999.52/81,018.72 = 18,944.64/x
  3. Step 3: Cross multiply
    53,999.52x = 81,018.72 × 18,944.64
  4. Step 4: Simplify right side
    53,999.52x = 1,534,870,483.66
  5. Step 5: Solve for x
    x = 1,534,870,483.66/53,999.52
  6. Step 6: Final answer
    x = 28,423.78

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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.