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Finding the Fourth Proportional to 104,379.42, 156,429.71 and 54,354.63

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Solution

The fourth proportional to 104,379.42, 156,429.71 and 54,354.63 is: 81,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,379.42 : 156,429.71 = 54,354.63 : x
  2. Step 2: Convert to fraction form
    104,379.42/156,429.71 = 54,354.63/x
  3. Step 3: Cross multiply
    104,379.42x = 156,429.71 × 54,354.63
  4. Step 4: Simplify right side
    104,379.42x = 8,502,679,008.06
  5. Step 5: Solve for x
    x = 8,502,679,008.06/104,379.42
  6. Step 6: Final answer
    x = 81,459.34

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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.