Home / 76,305.60-114,458.40-20,145.60

Finding the Fourth Proportional to 76,305.60, 114,458.40 and 20,145.60

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Solution

The fourth proportional to 76,305.60, 114,458.40 and 20,145.60 is: 30,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,305.60 : 114,458.40 = 20,145.60 : x
  2. Step 2: Convert to fraction form
    76,305.60/114,458.40 = 20,145.60/x
  3. Step 3: Cross multiply
    76,305.60x = 114,458.40 × 20,145.60
  4. Step 4: Simplify right side
    76,305.60x = 2,305,833,143.04
  5. Step 5: Solve for x
    x = 2,305,833,143.04/76,305.60
  6. Step 6: Final answer
    x = 30,218.40

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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.