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Finding the Fourth Proportional to 104,079.51, 143,630.78 and 56,333.88

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Solution

The fourth proportional to 104,079.51, 143,630.78 and 56,333.88 is: 77,741.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,079.51 : 143,630.78 = 56,333.88 : x
  2. Step 2: Convert to fraction form
    104,079.51/143,630.78 = 56,333.88/x
  3. Step 3: Cross multiply
    104,079.51x = 143,630.78 × 56,333.88
  4. Step 4: Simplify right side
    104,079.51x = 8,091,278,843.16
  5. Step 5: Solve for x
    x = 8,091,278,843.16/104,079.51
  6. Step 6: Final answer
    x = 77,741.32

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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.