Home / 86,831.20-130,149.60-36,902.80

Finding the Fourth Proportional to 86,831.20, 130,149.60 and 36,902.80

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Solution

The fourth proportional to 86,831.20, 130,149.60 and 36,902.80 is: 55,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,831.20 : 130,149.60 = 36,902.80 : x
  2. Step 2: Convert to fraction form
    86,831.20/130,149.60 = 36,902.80/x
  3. Step 3: Cross multiply
    86,831.20x = 130,149.60 × 36,902.80
  4. Step 4: Simplify right side
    86,831.20x = 4,802,884,658.88
  5. Step 5: Solve for x
    x = 4,802,884,658.88/86,831.20
  6. Step 6: Final answer
    x = 55,312.89

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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.