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Finding the Fourth Proportional to 30,446.40, 45,669.60 and 28,113.60

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Solution

The fourth proportional to 30,446.40, 45,669.60 and 28,113.60 is: 42,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,446.40 : 45,669.60 = 28,113.60 : x
  2. Step 2: Convert to fraction form
    30,446.40/45,669.60 = 28,113.60/x
  3. Step 3: Cross multiply
    30,446.40x = 45,669.60 × 28,113.60
  4. Step 4: Simplify right side
    30,446.40x = 1,283,936,866.56
  5. Step 5: Solve for x
    x = 1,283,936,866.56/30,446.40
  6. Step 6: Final answer
    x = 42,170.40

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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.