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Finding the Fourth Proportional to 53,965.80, 74,490.30 and 36,064.80

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Solution

The fourth proportional to 53,965.80, 74,490.30 and 36,064.80 is: 49,781.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,965.80 : 74,490.30 = 36,064.80 : x
  2. Step 2: Convert to fraction form
    53,965.80/74,490.30 = 36,064.80/x
  3. Step 3: Cross multiply
    53,965.80x = 74,490.30 × 36,064.80
  4. Step 4: Simplify right side
    53,965.80x = 2,686,477,771.44
  5. Step 5: Solve for x
    x = 2,686,477,771.44/53,965.80
  6. Step 6: Final answer
    x = 49,781.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.