Home / 85,043.61-127,579.32-25,865.55

Finding the Fourth Proportional to 85,043.61, 127,579.32 and 25,865.55

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Solution

The fourth proportional to 85,043.61, 127,579.32 and 25,865.55 is: 38,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,043.61 : 127,579.32 = 25,865.55 : x
  2. Step 2: Convert to fraction form
    85,043.61/127,579.32 = 25,865.55/x
  3. Step 3: Cross multiply
    85,043.61x = 127,579.32 × 25,865.55
  4. Step 4: Simplify right side
    85,043.61x = 3,299,909,280.43
  5. Step 5: Solve for x
    x = 3,299,909,280.43/85,043.61
  6. Step 6: Final answer
    x = 38,802.55

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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.