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Finding the Fourth Proportional to 99,068.85, 136,714.99 and 56,628.29

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Solution

The fourth proportional to 99,068.85, 136,714.99 and 56,628.29 is: 78,147.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,068.85 : 136,714.99 = 56,628.29 : x
  2. Step 2: Convert to fraction form
    99,068.85/136,714.99 = 56,628.29/x
  3. Step 3: Cross multiply
    99,068.85x = 136,714.99 × 56,628.29
  4. Step 4: Simplify right side
    99,068.85x = 7,741,935,759.28
  5. Step 5: Solve for x
    x = 7,741,935,759.28/99,068.85
  6. Step 6: Final answer
    x = 78,147.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.