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Finding the Fourth Proportional to 85,698.57, 118,235.38 and 49,880.98

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Solution

The fourth proportional to 85,698.57, 118,235.38 and 49,880.98 is: 68,819.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,698.57 : 118,235.38 = 49,880.98 : x
  2. Step 2: Convert to fraction form
    85,698.57/118,235.38 = 49,880.98/x
  3. Step 3: Cross multiply
    85,698.57x = 118,235.38 × 49,880.98
  4. Step 4: Simplify right side
    85,698.57x = 5,897,695,784.49
  5. Step 5: Solve for x
    x = 5,897,695,784.49/85,698.57
  6. Step 6: Final answer
    x = 68,819.07

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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.