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Finding the Fourth Proportional to 84,820.60, 127,230.90 and 55,271.80

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Solution

The fourth proportional to 84,820.60, 127,230.90 and 55,271.80 is: 82,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,820.60 : 127,230.90 = 55,271.80 : x
  2. Step 2: Convert to fraction form
    84,820.60/127,230.90 = 55,271.80/x
  3. Step 3: Cross multiply
    84,820.60x = 127,230.90 × 55,271.80
  4. Step 4: Simplify right side
    84,820.60x = 7,032,280,858.62
  5. Step 5: Solve for x
    x = 7,032,280,858.62/84,820.60
  6. Step 6: Final answer
    x = 82,907.70

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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.