Home / 85,646.25-118,243.67-55,890.09

Finding the Fourth Proportional to 85,646.25, 118,243.67 and 55,890.09

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Solution

The fourth proportional to 85,646.25, 118,243.67 and 55,890.09 is: 77,162.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,646.25 : 118,243.67 = 55,890.09 : x
  2. Step 2: Convert to fraction form
    85,646.25/118,243.67 = 55,890.09/x
  3. Step 3: Cross multiply
    85,646.25x = 118,243.67 × 55,890.09
  4. Step 4: Simplify right side
    85,646.25x = 6,608,649,078.78
  5. Step 5: Solve for x
    x = 6,608,649,078.78/85,646.25
  6. Step 6: Final answer
    x = 77,162.15

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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.