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Finding the Fourth Proportional to 89,801.40, 134,702.10 and 30,622.80

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Solution

The fourth proportional to 89,801.40, 134,702.10 and 30,622.80 is: 45,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,801.40 : 134,702.10 = 30,622.80 : x
  2. Step 2: Convert to fraction form
    89,801.40/134,702.10 = 30,622.80/x
  3. Step 3: Cross multiply
    89,801.40x = 134,702.10 × 30,622.80
  4. Step 4: Simplify right side
    89,801.40x = 4,124,955,467.88
  5. Step 5: Solve for x
    x = 4,124,955,467.88/89,801.40
  6. Step 6: Final answer
    x = 45,934.20

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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.