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Finding the Fourth Proportional to 86,528.64, 129,794.04 and 30,366.48

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Solution

The fourth proportional to 86,528.64, 129,794.04 and 30,366.48 is: 45,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,528.64 : 129,794.04 = 30,366.48 : x
  2. Step 2: Convert to fraction form
    86,528.64/129,794.04 = 30,366.48/x
  3. Step 3: Cross multiply
    86,528.64x = 129,794.04 × 30,366.48
  4. Step 4: Simplify right side
    86,528.64x = 3,941,388,119.78
  5. Step 5: Solve for x
    x = 3,941,388,119.78/86,528.64
  6. Step 6: Final answer
    x = 45,550.10

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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.