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Finding the Fourth Proportional to 48,948.40, 73,422.60 and 45,643.60

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Solution

The fourth proportional to 48,948.40, 73,422.60 and 45,643.60 is: 68,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,948.40 : 73,422.60 = 45,643.60 : x
  2. Step 2: Convert to fraction form
    48,948.40/73,422.60 = 45,643.60/x
  3. Step 3: Cross multiply
    48,948.40x = 73,422.60 × 45,643.60
  4. Step 4: Simplify right side
    48,948.40x = 3,351,271,785.36
  5. Step 5: Solve for x
    x = 3,351,271,785.36/48,948.40
  6. Step 6: Final answer
    x = 68,465.40

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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.