Home / 76,943.94-105,945.80-65,587.97

Finding the Fourth Proportional to 76,943.94, 105,945.80 and 65,587.97

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Solution

The fourth proportional to 76,943.94, 105,945.80 and 65,587.97 is: 90,309.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,943.94 : 105,945.80 = 65,587.97 : x
  2. Step 2: Convert to fraction form
    76,943.94/105,945.80 = 65,587.97/x
  3. Step 3: Cross multiply
    76,943.94x = 105,945.80 × 65,587.97
  4. Step 4: Simplify right side
    76,943.94x = 6,948,769,094.36
  5. Step 5: Solve for x
    x = 6,948,769,094.36/76,943.94
  6. Step 6: Final answer
    x = 90,309.50

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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.