Home / 86,054.10-129,131.91-36,142.98

Finding the Fourth Proportional to 86,054.10, 129,131.91 and 36,142.98

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Solution

The fourth proportional to 86,054.10, 129,131.91 and 36,142.98 is: 54,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,054.10 : 129,131.91 = 36,142.98 : x
  2. Step 2: Convert to fraction form
    86,054.10/129,131.91 = 36,142.98/x
  3. Step 3: Cross multiply
    86,054.10x = 129,131.91 × 36,142.98
  4. Step 4: Simplify right side
    86,054.10x = 4,667,212,040.49
  5. Step 5: Solve for x
    x = 4,667,212,040.49/86,054.10
  6. Step 6: Final answer
    x = 54,235.79

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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.