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Finding the Fourth Proportional to 55,059.22, 75,982.62 and 31,185.28

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Solution

The fourth proportional to 55,059.22, 75,982.62 and 31,185.28 is: 43,036.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,059.22 : 75,982.62 = 31,185.28 : x
  2. Step 2: Convert to fraction form
    55,059.22/75,982.62 = 31,185.28/x
  3. Step 3: Cross multiply
    55,059.22x = 75,982.62 × 31,185.28
  4. Step 4: Simplify right side
    55,059.22x = 2,369,539,279.83
  5. Step 5: Solve for x
    x = 2,369,539,279.83/55,059.22
  6. Step 6: Final answer
    x = 43,036.19

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1.5x scale

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.