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Finding the Fourth Proportional to 85,651.62, 128,445.48 and 29,475.84

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Solution

The fourth proportional to 85,651.62, 128,445.48 and 29,475.84 is: 44,202.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,651.62 : 128,445.48 = 29,475.84 : x
  2. Step 2: Convert to fraction form
    85,651.62/128,445.48 = 29,475.84/x
  3. Step 3: Cross multiply
    85,651.62x = 128,445.48 × 29,475.84
  4. Step 4: Simplify right side
    85,651.62x = 3,786,038,417.20
  5. Step 5: Solve for x
    x = 3,786,038,417.20/85,651.62
  6. Step 6: Final answer
    x = 44,202.76

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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.