Home / 85,135.47-127,722.05-25,975.77

Finding the Fourth Proportional to 85,135.47, 127,722.05 and 25,975.77

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Solution

The fourth proportional to 85,135.47, 127,722.05 and 25,975.77 is: 38,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,135.47 : 127,722.05 = 25,975.77 : x
  2. Step 2: Convert to fraction form
    85,135.47/127,722.05 = 25,975.77/x
  3. Step 3: Cross multiply
    85,135.47x = 127,722.05 × 25,975.77
  4. Step 4: Simplify right side
    85,135.47x = 3,317,678,464.85
  5. Step 5: Solve for x
    x = 3,317,678,464.85/85,135.47
  6. Step 6: Final answer
    x = 38,969.40

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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.