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Finding the Fourth Proportional to 38,559.80, 57,785.70 and 30,675.80

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Solution

The fourth proportional to 38,559.80, 57,785.70 and 30,675.80 is: 45,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,559.80 : 57,785.70 = 30,675.80 : x
  2. Step 2: Convert to fraction form
    38,559.80/57,785.70 = 30,675.80/x
  3. Step 3: Cross multiply
    38,559.80x = 57,785.70 × 30,675.80
  4. Step 4: Simplify right side
    38,559.80x = 1,772,622,576.06
  5. Step 5: Solve for x
    x = 1,772,622,576.06/38,559.80
  6. Step 6: Final answer
    x = 45,970.74

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1.5x scale

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.