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Finding the Fourth Proportional to 30,569.80, 45,854.68 and 20,179.12

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Solution

The fourth proportional to 30,569.80, 45,854.68 and 20,179.12 is: 30,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,569.80 : 45,854.68 = 20,179.12 : x
  2. Step 2: Convert to fraction form
    30,569.80/45,854.68 = 20,179.12/x
  3. Step 3: Cross multiply
    30,569.80x = 45,854.68 × 20,179.12
  4. Step 4: Simplify right side
    30,569.80x = 925,307,090.28
  5. Step 5: Solve for x
    x = 925,307,090.28/30,569.80
  6. Step 6: Final answer
    x = 30,268.67

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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.