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Finding the Fourth Proportional to 98,777.64, 148,181.04 and 28,647.84

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Solution

The fourth proportional to 98,777.64, 148,181.04 and 28,647.84 is: 42,975.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,777.64 : 148,181.04 = 28,647.84 : x
  2. Step 2: Convert to fraction form
    98,777.64/148,181.04 = 28,647.84/x
  3. Step 3: Cross multiply
    98,777.64x = 148,181.04 × 28,647.84
  4. Step 4: Simplify right side
    98,777.64x = 4,245,066,724.95
  5. Step 5: Solve for x
    x = 4,245,066,724.95/98,777.64
  6. Step 6: Final answer
    x = 42,975.99

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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.