Home / 86,769.02-130,190.39-30,639.67

Finding the Fourth Proportional to 86,769.02, 130,190.39 and 30,639.67

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Solution

The fourth proportional to 86,769.02, 130,190.39 and 30,639.67 is: 45,972.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,769.02 : 130,190.39 = 30,639.67 : x
  2. Step 2: Convert to fraction form
    86,769.02/130,190.39 = 30,639.67/x
  3. Step 3: Cross multiply
    86,769.02x = 130,190.39 × 30,639.67
  4. Step 4: Simplify right side
    86,769.02x = 3,988,990,223.00
  5. Step 5: Solve for x
    x = 3,988,990,223.00/86,769.02
  6. Step 6: Final answer
    x = 45,972.52

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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.