Home / 87,619.76-120,915.15-49,894.01

Finding the Fourth Proportional to 87,619.76, 120,915.15 and 49,894.01

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Solution

The fourth proportional to 87,619.76, 120,915.15 and 49,894.01 is: 68,853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.76 : 120,915.15 = 49,894.01 : x
  2. Step 2: Convert to fraction form
    87,619.76/120,915.15 = 49,894.01/x
  3. Step 3: Cross multiply
    87,619.76x = 120,915.15 × 49,894.01
  4. Step 4: Simplify right side
    87,619.76x = 6,032,941,703.25
  5. Step 5: Solve for x
    x = 6,032,941,703.25/87,619.76
  6. Step 6: Final answer
    x = 68,853.67

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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.