Home / 38,129.60-57,226.80-30,742.40

Finding the Fourth Proportional to 38,129.60, 57,226.80 and 30,742.40

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Solution

The fourth proportional to 38,129.60, 57,226.80 and 30,742.40 is: 46,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,129.60 : 57,226.80 = 30,742.40 : x
  2. Step 2: Convert to fraction form
    38,129.60/57,226.80 = 30,742.40/x
  3. Step 3: Cross multiply
    38,129.60x = 57,226.80 × 30,742.40
  4. Step 4: Simplify right side
    38,129.60x = 1,759,289,176.32
  5. Step 5: Solve for x
    x = 1,759,289,176.32/38,129.60
  6. Step 6: Final answer
    x = 46,139.72

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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.