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Finding the Fourth Proportional to 30,199.62, 45,301.66 and 8,012.51

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Solution

The fourth proportional to 30,199.62, 45,301.66 and 8,012.51 is: 12,019.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,199.62 : 45,301.66 = 8,012.51 : x
  2. Step 2: Convert to fraction form
    30,199.62/45,301.66 = 8,012.51/x
  3. Step 3: Cross multiply
    30,199.62x = 45,301.66 × 8,012.51
  4. Step 4: Simplify right side
    30,199.62x = 362,980,003.77
  5. Step 5: Solve for x
    x = 362,980,003.77/30,199.62
  6. Step 6: Final answer
    x = 12,019.36

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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.