Home / 109,037.72-163,578.54-38,915.20

Finding the Fourth Proportional to 109,037.72, 163,578.54 and 38,915.20

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Solution

The fourth proportional to 109,037.72, 163,578.54 and 38,915.20 is: 58,380.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,037.72 : 163,578.54 = 38,915.20 : x
  2. Step 2: Convert to fraction form
    109,037.72/163,578.54 = 38,915.20/x
  3. Step 3: Cross multiply
    109,037.72x = 163,578.54 × 38,915.20
  4. Step 4: Simplify right side
    109,037.72x = 6,365,691,599.81
  5. Step 5: Solve for x
    x = 6,365,691,599.81/109,037.72
  6. Step 6: Final answer
    x = 58,380.64

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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.