Home / 55,303.61-76,321.64-31,112.15

Finding the Fourth Proportional to 55,303.61, 76,321.64 and 31,112.15

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Solution

The fourth proportional to 55,303.61, 76,321.64 and 31,112.15 is: 42,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,303.61 : 76,321.64 = 31,112.15 : x
  2. Step 2: Convert to fraction form
    55,303.61/76,321.64 = 31,112.15/x
  3. Step 3: Cross multiply
    55,303.61x = 76,321.64 × 31,112.15
  4. Step 4: Simplify right side
    55,303.61x = 2,374,530,311.93
  5. Step 5: Solve for x
    x = 2,374,530,311.93/55,303.61
  6. Step 6: Final answer
    x = 42,936.26

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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.