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Finding the Fourth Proportional to 85,040.47, 127,579.02 and 25,880.91

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Solution

The fourth proportional to 85,040.47, 127,579.02 and 25,880.91 is: 38,826.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,040.47 : 127,579.02 = 25,880.91 : x
  2. Step 2: Convert to fraction form
    85,040.47/127,579.02 = 25,880.91/x
  3. Step 3: Cross multiply
    85,040.47x = 127,579.02 × 25,880.91
  4. Step 4: Simplify right side
    85,040.47x = 3,301,861,134.51
  5. Step 5: Solve for x
    x = 3,301,861,134.51/85,040.47
  6. Step 6: Final answer
    x = 38,826.94

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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.