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Finding the Fourth Proportional to 86,574.56, 129,813.23 and 30,399.03

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Solution

The fourth proportional to 86,574.56, 129,813.23 and 30,399.03 is: 45,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,574.56 : 129,813.23 = 30,399.03 : x
  2. Step 2: Convert to fraction form
    86,574.56/129,813.23 = 30,399.03/x
  3. Step 3: Cross multiply
    86,574.56x = 129,813.23 × 30,399.03
  4. Step 4: Simplify right side
    86,574.56x = 3,946,196,349.16
  5. Step 5: Solve for x
    x = 3,946,196,349.16/86,574.56
  6. Step 6: Final answer
    x = 45,581.48

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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.