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Finding the Fourth Proportional to 86,029.98, 128,994.75 and 33,377.96

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Solution

The fourth proportional to 86,029.98, 128,994.75 and 33,377.96 is: 50,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,029.98 : 128,994.75 = 33,377.96 : x
  2. Step 2: Convert to fraction form
    86,029.98/128,994.75 = 33,377.96/x
  3. Step 3: Cross multiply
    86,029.98x = 128,994.75 × 33,377.96
  4. Step 4: Simplify right side
    86,029.98x = 4,305,580,960.74
  5. Step 5: Solve for x
    x = 4,305,580,960.74/86,029.98
  6. Step 6: Final answer
    x = 50,047.45

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1.5x scale

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.