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Finding the Fourth Proportional to 85,602.91, 128,457.68 and 41,234.15

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Solution

The fourth proportional to 85,602.91, 128,457.68 and 41,234.15 is: 61,876.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,602.91 : 128,457.68 = 41,234.15 : x
  2. Step 2: Convert to fraction form
    85,602.91/128,457.68 = 41,234.15/x
  3. Step 3: Cross multiply
    85,602.91x = 128,457.68 × 41,234.15
  4. Step 4: Simplify right side
    85,602.91x = 5,296,843,245.77
  5. Step 5: Solve for x
    x = 5,296,843,245.77/85,602.91
  6. Step 6: Final answer
    x = 61,876.91

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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.