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Finding the Fourth Proportional to 98,880.64, 148,342.98 and 54,484.54

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Solution

The fourth proportional to 98,880.64, 148,342.98 and 54,484.54 is: 81,738.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,880.64 : 148,342.98 = 54,484.54 : x
  2. Step 2: Convert to fraction form
    98,880.64/148,342.98 = 54,484.54/x
  3. Step 3: Cross multiply
    98,880.64x = 148,342.98 × 54,484.54
  4. Step 4: Simplify right side
    98,880.64x = 8,082,399,027.53
  5. Step 5: Solve for x
    x = 8,082,399,027.53/98,880.64
  6. Step 6: Final answer
    x = 81,738.94

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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.