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Finding the Fourth Proportional to 40,346.40, 60,519.60 and 20,618.40

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Solution

The fourth proportional to 40,346.40, 60,519.60 and 20,618.40 is: 30,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,346.40 : 60,519.60 = 20,618.40 : x
  2. Step 2: Convert to fraction form
    40,346.40/60,519.60 = 20,618.40/x
  3. Step 3: Cross multiply
    40,346.40x = 60,519.60 × 20,618.40
  4. Step 4: Simplify right side
    40,346.40x = 1,247,817,320.64
  5. Step 5: Solve for x
    x = 1,247,817,320.64/40,346.40
  6. Step 6: Final answer
    x = 30,927.60

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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.