Home / 55,277.20-76,282.80-31,405.19

Finding the Fourth Proportional to 55,277.20, 76,282.80 and 31,405.19

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Solution

The fourth proportional to 55,277.20, 76,282.80 and 31,405.19 is: 43,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,277.20 : 76,282.80 = 31,405.19 : x
  2. Step 2: Convert to fraction form
    55,277.20/76,282.80 = 31,405.19/x
  3. Step 3: Cross multiply
    55,277.20x = 76,282.80 × 31,405.19
  4. Step 4: Simplify right side
    55,277.20x = 2,395,675,328.55
  5. Step 5: Solve for x
    x = 2,395,675,328.55/55,277.20
  6. Step 6: Final answer
    x = 43,339.30

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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.