Home / 85,315.32-127,991.66-26,155.60

Finding the Fourth Proportional to 85,315.32, 127,991.66 and 26,155.60

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Solution

The fourth proportional to 85,315.32, 127,991.66 and 26,155.60 is: 39,239.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,315.32 : 127,991.66 = 26,155.60 : x
  2. Step 2: Convert to fraction form
    85,315.32/127,991.66 = 26,155.60/x
  3. Step 3: Cross multiply
    85,315.32x = 127,991.66 × 26,155.60
  4. Step 4: Simplify right side
    85,315.32x = 3,347,698,211.54
  5. Step 5: Solve for x
    x = 3,347,698,211.54/85,315.32
  6. Step 6: Final answer
    x = 39,239.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.