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Finding the Fourth Proportional to 35,879.80, 53,795.40 and 18,335.20

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Solution

The fourth proportional to 35,879.80, 53,795.40 and 18,335.20 is: 27,490.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,879.80 : 53,795.40 = 18,335.20 : x
  2. Step 2: Convert to fraction form
    35,879.80/53,795.40 = 18,335.20/x
  3. Step 3: Cross multiply
    35,879.80x = 53,795.40 × 18,335.20
  4. Step 4: Simplify right side
    35,879.80x = 986,349,418.08
  5. Step 5: Solve for x
    x = 986,349,418.08/35,879.80
  6. Step 6: Final answer
    x = 27,490.38

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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.