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Finding the Fourth Proportional to 78,915.56, 118,372.14 and 23,511.56

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Solution

The fourth proportional to 78,915.56, 118,372.14 and 23,511.56 is: 35,266.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,915.56 : 118,372.14 = 23,511.56 : x
  2. Step 2: Convert to fraction form
    78,915.56/118,372.14 = 23,511.56/x
  3. Step 3: Cross multiply
    78,915.56x = 118,372.14 × 23,511.56
  4. Step 4: Simplify right side
    78,915.56x = 2,783,113,671.94
  5. Step 5: Solve for x
    x = 2,783,113,671.94/78,915.56
  6. Step 6: Final answer
    x = 35,266.98

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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.