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Finding the Fourth Proportional to 84,718.80, 127,078.20 and 25,563.60

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Solution

The fourth proportional to 84,718.80, 127,078.20 and 25,563.60 is: 38,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,718.80 : 127,078.20 = 25,563.60 : x
  2. Step 2: Convert to fraction form
    84,718.80/127,078.20 = 25,563.60/x
  3. Step 3: Cross multiply
    84,718.80x = 127,078.20 × 25,563.60
  4. Step 4: Simplify right side
    84,718.80x = 3,248,576,273.52
  5. Step 5: Solve for x
    x = 3,248,576,273.52/84,718.80
  6. Step 6: Final answer
    x = 38,345.40

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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.