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Finding the Fourth Proportional to 30,341.40, 45,512.10 and 28,980.60

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Solution

The fourth proportional to 30,341.40, 45,512.10 and 28,980.60 is: 43,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,341.40 : 45,512.10 = 28,980.60 : x
  2. Step 2: Convert to fraction form
    30,341.40/45,512.10 = 28,980.60/x
  3. Step 3: Cross multiply
    30,341.40x = 45,512.10 × 28,980.60
  4. Step 4: Simplify right side
    30,341.40x = 1,318,967,965.26
  5. Step 5: Solve for x
    x = 1,318,967,965.26/30,341.40
  6. Step 6: Final answer
    x = 43,470.90

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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.