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Finding the Fourth Proportional to 53,866.40, 80,803.20 and 18,327.20

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Solution

The fourth proportional to 53,866.40, 80,803.20 and 18,327.20 is: 27,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,866.40 : 80,803.20 = 18,327.20 : x
  2. Step 2: Convert to fraction form
    53,866.40/80,803.20 = 18,327.20/x
  3. Step 3: Cross multiply
    53,866.40x = 80,803.20 × 18,327.20
  4. Step 4: Simplify right side
    53,866.40x = 1,480,896,407.04
  5. Step 5: Solve for x
    x = 1,480,896,407.04/53,866.40
  6. Step 6: Final answer
    x = 27,492.02

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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.