Home / 55,886.20-77,121.38-30,735.70

Finding the Fourth Proportional to 55,886.20, 77,121.38 and 30,735.70

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Solution

The fourth proportional to 55,886.20, 77,121.38 and 30,735.70 is: 42,414.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,886.20 : 77,121.38 = 30,735.70 : x
  2. Step 2: Convert to fraction form
    55,886.20/77,121.38 = 30,735.70/x
  3. Step 3: Cross multiply
    55,886.20x = 77,121.38 × 30,735.70
  4. Step 4: Simplify right side
    55,886.20x = 2,370,379,599.27
  5. Step 5: Solve for x
    x = 2,370,379,599.27/55,886.20
  6. Step 6: Final answer
    x = 42,414.40

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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.