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Finding the Fourth Proportional to 85,774.80, 128,670.96 and 29,607.60

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Solution

The fourth proportional to 85,774.80, 128,670.96 and 29,607.60 is: 44,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,774.80 : 128,670.96 = 29,607.60 : x
  2. Step 2: Convert to fraction form
    85,774.80/128,670.96 = 29,607.60/x
  3. Step 3: Cross multiply
    85,774.80x = 128,670.96 × 29,607.60
  4. Step 4: Simplify right side
    85,774.80x = 3,809,638,315.30
  5. Step 5: Solve for x
    x = 3,809,638,315.30/85,774.80
  6. Step 6: Final answer
    x = 44,414.42

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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.