Home / 86,945.60-130,418.40-40,289.60

Finding the Fourth Proportional to 86,945.60, 130,418.40 and 40,289.60

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Solution

The fourth proportional to 86,945.60, 130,418.40 and 40,289.60 is: 60,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,945.60 : 130,418.40 = 40,289.60 : x
  2. Step 2: Convert to fraction form
    86,945.60/130,418.40 = 40,289.60/x
  3. Step 3: Cross multiply
    86,945.60x = 130,418.40 × 40,289.60
  4. Step 4: Simplify right side
    86,945.60x = 5,254,505,168.64
  5. Step 5: Solve for x
    x = 5,254,505,168.64/86,945.60
  6. Step 6: Final answer
    x = 60,434.40

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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.