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Finding the Fourth Proportional to 30,154.60, 45,231.90 and 25,270.30

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Solution

The fourth proportional to 30,154.60, 45,231.90 and 25,270.30 is: 37,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.60 : 45,231.90 = 25,270.30 : x
  2. Step 2: Convert to fraction form
    30,154.60/45,231.90 = 25,270.30/x
  3. Step 3: Cross multiply
    30,154.60x = 45,231.90 × 25,270.30
  4. Step 4: Simplify right side
    30,154.60x = 1,143,023,682.57
  5. Step 5: Solve for x
    x = 1,143,023,682.57/30,154.60
  6. Step 6: Final answer
    x = 37,905.45

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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.