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Finding the Fourth Proportional to 98,559.45, 147,865.10 and 51,177.69

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Solution

The fourth proportional to 98,559.45, 147,865.10 and 51,177.69 is: 76,779.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,559.45 : 147,865.10 = 51,177.69 : x
  2. Step 2: Convert to fraction form
    98,559.45/147,865.10 = 51,177.69/x
  3. Step 3: Cross multiply
    98,559.45x = 147,865.10 × 51,177.69
  4. Step 4: Simplify right side
    98,559.45x = 7,567,393,993.73
  5. Step 5: Solve for x
    x = 7,567,393,993.73/98,559.45
  6. Step 6: Final answer
    x = 76,779.99

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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.