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Finding the Fourth Proportional to 30,252.40, 45,378.60 and 28,891.60

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Solution

The fourth proportional to 30,252.40, 45,378.60 and 28,891.60 is: 43,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,252.40 : 45,378.60 = 28,891.60 : x
  2. Step 2: Convert to fraction form
    30,252.40/45,378.60 = 28,891.60/x
  3. Step 3: Cross multiply
    30,252.40x = 45,378.60 × 28,891.60
  4. Step 4: Simplify right side
    30,252.40x = 1,311,060,359.76
  5. Step 5: Solve for x
    x = 1,311,060,359.76/30,252.40
  6. Step 6: Final answer
    x = 43,337.40

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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.