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Finding the Fourth Proportional to 86,053.36, 118,770.72 and 54,988.74

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Solution

The fourth proportional to 86,053.36, 118,770.72 and 54,988.74 is: 75,895.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,053.36 : 118,770.72 = 54,988.74 : x
  2. Step 2: Convert to fraction form
    86,053.36/118,770.72 = 54,988.74/x
  3. Step 3: Cross multiply
    86,053.36x = 118,770.72 × 54,988.74
  4. Step 4: Simplify right side
    86,053.36x = 6,531,052,241.69
  5. Step 5: Solve for x
    x = 6,531,052,241.69/86,053.36
  6. Step 6: Final answer
    x = 75,895.38

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1.5x scale

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.