Home / 86,749.20-130,026.60-36,820.80

Finding the Fourth Proportional to 86,749.20, 130,026.60 and 36,820.80

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Solution

The fourth proportional to 86,749.20, 130,026.60 and 36,820.80 is: 55,189.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,749.20 : 130,026.60 = 36,820.80 : x
  2. Step 2: Convert to fraction form
    86,749.20/130,026.60 = 36,820.80/x
  3. Step 3: Cross multiply
    86,749.20x = 130,026.60 × 36,820.80
  4. Step 4: Simplify right side
    86,749.20x = 4,787,683,433.28
  5. Step 5: Solve for x
    x = 4,787,683,433.28/86,749.20
  6. Step 6: Final answer
    x = 55,189.94

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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.