Home / 86,180.45-129,271.32-30,020.46

Finding the Fourth Proportional to 86,180.45, 129,271.32 and 30,020.46

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Solution

The fourth proportional to 86,180.45, 129,271.32 and 30,020.46 is: 45,030.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,180.45 : 129,271.32 = 30,020.46 : x
  2. Step 2: Convert to fraction form
    86,180.45/129,271.32 = 30,020.46/x
  3. Step 3: Cross multiply
    86,180.45x = 129,271.32 × 30,020.46
  4. Step 4: Simplify right side
    86,180.45x = 3,880,784,491.21
  5. Step 5: Solve for x
    x = 3,880,784,491.21/86,180.45
  6. Step 6: Final answer
    x = 45,030.92

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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.