Home / 86,368.79-129,527.03-30,198.43

Finding the Fourth Proportional to 86,368.79, 129,527.03 and 30,198.43

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Solution

The fourth proportional to 86,368.79, 129,527.03 and 30,198.43 is: 45,288.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,368.79 : 129,527.03 = 30,198.43 : x
  2. Step 2: Convert to fraction form
    86,368.79/129,527.03 = 30,198.43/x
  3. Step 3: Cross multiply
    86,368.79x = 129,527.03 × 30,198.43
  4. Step 4: Simplify right side
    86,368.79x = 3,911,512,225.43
  5. Step 5: Solve for x
    x = 3,911,512,225.43/86,368.79
  6. Step 6: Final answer
    x = 45,288.49

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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.