Home / 87,211.41-120,364.89-53,239.65

Finding the Fourth Proportional to 87,211.41, 120,364.89 and 53,239.65

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Solution

The fourth proportional to 87,211.41, 120,364.89 and 53,239.65 is: 73,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,211.41 : 120,364.89 = 53,239.65 : x
  2. Step 2: Convert to fraction form
    87,211.41/120,364.89 = 53,239.65/x
  3. Step 3: Cross multiply
    87,211.41x = 120,364.89 × 53,239.65
  4. Step 4: Simplify right side
    87,211.41x = 6,408,184,980.45
  5. Step 5: Solve for x
    x = 6,408,184,980.45/87,211.41
  6. Step 6: Final answer
    x = 73,478.75

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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.