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Finding the Fourth Proportional to 49,377.60, 74,145.60 and 45,739.20

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Solution

The fourth proportional to 49,377.60, 74,145.60 and 45,739.20 is: 68,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,377.60 : 74,145.60 = 45,739.20 : x
  2. Step 2: Convert to fraction form
    49,377.60/74,145.60 = 45,739.20/x
  3. Step 3: Cross multiply
    49,377.60x = 74,145.60 × 45,739.20
  4. Step 4: Simplify right side
    49,377.60x = 3,391,360,427.52
  5. Step 5: Solve for x
    x = 3,391,360,427.52/49,377.60
  6. Step 6: Final answer
    x = 68,682.16

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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.