Home / 85,518.90-118,021.86-49,708.80

Finding the Fourth Proportional to 85,518.90, 118,021.86 and 49,708.80

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Solution

The fourth proportional to 85,518.90, 118,021.86 and 49,708.80 is: 68,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,518.90 : 118,021.86 = 49,708.80 : x
  2. Step 2: Convert to fraction form
    85,518.90/118,021.86 = 49,708.80/x
  3. Step 3: Cross multiply
    85,518.90x = 118,021.86 × 49,708.80
  4. Step 4: Simplify right side
    85,518.90x = 5,866,725,034.37
  5. Step 5: Solve for x
    x = 5,866,725,034.37/85,518.90
  6. Step 6: Final answer
    x = 68,601.50

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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.