Home / 85,140.17-127,709.89-25,975.64

Finding the Fourth Proportional to 85,140.17, 127,709.89 and 25,975.64

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Solution

The fourth proportional to 85,140.17, 127,709.89 and 25,975.64 is: 38,963.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.17 : 127,709.89 = 25,975.64 : x
  2. Step 2: Convert to fraction form
    85,140.17/127,709.89 = 25,975.64/x
  3. Step 3: Cross multiply
    85,140.17x = 127,709.89 × 25,975.64
  4. Step 4: Simplify right side
    85,140.17x = 3,317,345,423.59
  5. Step 5: Solve for x
    x = 3,317,345,423.59/85,140.17
  6. Step 6: Final answer
    x = 38,963.34

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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.