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Finding the Fourth Proportional to 72,887.28, 109,287.72 and 25,479.60

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Solution

The fourth proportional to 72,887.28, 109,287.72 and 25,479.60 is: 38,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,887.28 : 109,287.72 = 25,479.60 : x
  2. Step 2: Convert to fraction form
    72,887.28/109,287.72 = 25,479.60/x
  3. Step 3: Cross multiply
    72,887.28x = 109,287.72 × 25,479.60
  4. Step 4: Simplify right side
    72,887.28x = 2,784,607,390.51
  5. Step 5: Solve for x
    x = 2,784,607,390.51/72,887.28
  6. Step 6: Final answer
    x = 38,204.30

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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.