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Finding the Fourth Proportional to 79,885.86, 119,714.60 and 58,659.36

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Solution

The fourth proportional to 79,885.86, 119,714.60 and 58,659.36 is: 87,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,885.86 : 119,714.60 = 58,659.36 : x
  2. Step 2: Convert to fraction form
    79,885.86/119,714.60 = 58,659.36/x
  3. Step 3: Cross multiply
    79,885.86x = 119,714.60 × 58,659.36
  4. Step 4: Simplify right side
    79,885.86x = 7,022,381,818.66
  5. Step 5: Solve for x
    x = 7,022,381,818.66/79,885.86
  6. Step 6: Final answer
    x = 87,905.19

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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.