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Finding the Fourth Proportional to 30,057.60, 45,086.40 and 10,334.40

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Solution

The fourth proportional to 30,057.60, 45,086.40 and 10,334.40 is: 15,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,057.60 : 45,086.40 = 10,334.40 : x
  2. Step 2: Convert to fraction form
    30,057.60/45,086.40 = 10,334.40/x
  3. Step 3: Cross multiply
    30,057.60x = 45,086.40 × 10,334.40
  4. Step 4: Simplify right side
    30,057.60x = 465,940,892.16
  5. Step 5: Solve for x
    x = 465,940,892.16/30,057.60
  6. Step 6: Final answer
    x = 15,501.60

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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.