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Finding the Fourth Proportional to 56,788, 78,367.44 and 31,636.96

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Solution

The fourth proportional to 56,788, 78,367.44 and 31,636.96 is: 43,659.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,788 : 78,367.44 = 31,636.96 : x
  2. Step 2: Convert to fraction form
    56,788/78,367.44 = 31,636.96/x
  3. Step 3: Cross multiply
    56,788x = 78,367.44 × 31,636.96
  4. Step 4: Simplify right side
    56,788x = 2,479,307,564.58
  5. Step 5: Solve for x
    x = 2,479,307,564.58/56,788
  6. Step 6: Final answer
    x = 43,659.00

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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.