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Finding the Fourth Proportional to 77,975.73, 107,606.58 and 45,703.92

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Solution

The fourth proportional to 77,975.73, 107,606.58 and 45,703.92 is: 63,071.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,975.73 : 107,606.58 = 45,703.92 : x
  2. Step 2: Convert to fraction form
    77,975.73/107,606.58 = 45,703.92/x
  3. Step 3: Cross multiply
    77,975.73x = 107,606.58 × 45,703.92
  4. Step 4: Simplify right side
    77,975.73x = 4,918,042,523.79
  5. Step 5: Solve for x
    x = 4,918,042,523.79/77,975.73
  6. Step 6: Final answer
    x = 63,071.45

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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.