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Finding the Fourth Proportional to 108,579.40, 162,893.40 and 42,013.60

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Solution

The fourth proportional to 108,579.40, 162,893.40 and 42,013.60 is: 63,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,579.40 : 162,893.40 = 42,013.60 : x
  2. Step 2: Convert to fraction form
    108,579.40/162,893.40 = 42,013.60/x
  3. Step 3: Cross multiply
    108,579.40x = 162,893.40 × 42,013.60
  4. Step 4: Simplify right side
    108,579.40x = 6,843,738,150.24
  5. Step 5: Solve for x
    x = 6,843,738,150.24/108,579.40
  6. Step 6: Final answer
    x = 63,029.80

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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.