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Finding the Fourth Proportional to 85,633.62, 128,418.48 and 29,457.84

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Solution

The fourth proportional to 85,633.62, 128,418.48 and 29,457.84 is: 44,175.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,633.62 : 128,418.48 = 29,457.84 : x
  2. Step 2: Convert to fraction form
    85,633.62/128,418.48 = 29,457.84/x
  3. Step 3: Cross multiply
    85,633.62x = 128,418.48 × 29,457.84
  4. Step 4: Simplify right side
    85,633.62x = 3,782,931,036.88
  5. Step 5: Solve for x
    x = 3,782,931,036.88/85,633.62
  6. Step 6: Final answer
    x = 44,175.77

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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.