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Finding the Fourth Proportional to 72,173.84, 108,258.32 and 25,425.50

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Solution

The fourth proportional to 72,173.84, 108,258.32 and 25,425.50 is: 38,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,173.84 : 108,258.32 = 25,425.50 : x
  2. Step 2: Convert to fraction form
    72,173.84/108,258.32 = 25,425.50/x
  3. Step 3: Cross multiply
    72,173.84x = 108,258.32 × 25,425.50
  4. Step 4: Simplify right side
    72,173.84x = 2,752,521,915.16
  5. Step 5: Solve for x
    x = 2,752,521,915.16/72,173.84
  6. Step 6: Final answer
    x = 38,137.39

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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.