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Finding the Fourth Proportional to 74,682.40, 112,023.60 and 68,461.60

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Solution

The fourth proportional to 74,682.40, 112,023.60 and 68,461.60 is: 102,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,682.40 : 112,023.60 = 68,461.60 : x
  2. Step 2: Convert to fraction form
    74,682.40/112,023.60 = 68,461.60/x
  3. Step 3: Cross multiply
    74,682.40x = 112,023.60 × 68,461.60
  4. Step 4: Simplify right side
    74,682.40x = 7,669,314,893.76
  5. Step 5: Solve for x
    x = 7,669,314,893.76/74,682.40
  6. Step 6: Final answer
    x = 102,692.40

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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.