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Finding the Fourth Proportional to 76,019.86, 104,890.01 and 45,387.01

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Solution

The fourth proportional to 76,019.86, 104,890.01 and 45,387.01 is: 62,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,019.86 : 104,890.01 = 45,387.01 : x
  2. Step 2: Convert to fraction form
    76,019.86/104,890.01 = 45,387.01/x
  3. Step 3: Cross multiply
    76,019.86x = 104,890.01 × 45,387.01
  4. Step 4: Simplify right side
    76,019.86x = 4,760,643,889.00
  5. Step 5: Solve for x
    x = 4,760,643,889.00/76,019.86
  6. Step 6: Final answer
    x = 62,623.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.