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Finding the Fourth Proportional to 53,553.88, 80,302.74 and 18,485.20

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Solution

The fourth proportional to 53,553.88, 80,302.74 and 18,485.20 is: 27,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,553.88 : 80,302.74 = 18,485.20 : x
  2. Step 2: Convert to fraction form
    53,553.88/80,302.74 = 18,485.20/x
  3. Step 3: Cross multiply
    53,553.88x = 80,302.74 × 18,485.20
  4. Step 4: Simplify right side
    53,553.88x = 1,484,412,209.45
  5. Step 5: Solve for x
    x = 1,484,412,209.45/53,553.88
  6. Step 6: Final answer
    x = 27,718.11

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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.