Home / 77,119.20-115,707.60-30,404.64

Finding the Fourth Proportional to 77,119.20, 115,707.60 and 30,404.64

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Solution

The fourth proportional to 77,119.20, 115,707.60 and 30,404.64 is: 45,618.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,119.20 : 115,707.60 = 30,404.64 : x
  2. Step 2: Convert to fraction form
    77,119.20/115,707.60 = 30,404.64/x
  3. Step 3: Cross multiply
    77,119.20x = 115,707.60 × 30,404.64
  4. Step 4: Simplify right side
    77,119.20x = 3,518,047,923.26
  5. Step 5: Solve for x
    x = 3,518,047,923.26/77,119.20
  6. Step 6: Final answer
    x = 45,618.31

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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.