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Finding the Fourth Proportional to 89,385.70, 134,038.95 and 30,205.30

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Solution

The fourth proportional to 89,385.70, 134,038.95 and 30,205.30 is: 45,294.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,385.70 : 134,038.95 = 30,205.30 : x
  2. Step 2: Convert to fraction form
    89,385.70/134,038.95 = 30,205.30/x
  3. Step 3: Cross multiply
    89,385.70x = 134,038.95 × 30,205.30
  4. Step 4: Simplify right side
    89,385.70x = 4,048,686,696.44
  5. Step 5: Solve for x
    x = 4,048,686,696.44/89,385.70
  6. Step 6: Final answer
    x = 45,294.57

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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.