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Finding the Fourth Proportional to 56,610, 78,125.04 and 31,467.60

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Solution

The fourth proportional to 56,610, 78,125.04 and 31,467.60 is: 43,427.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,610 : 78,125.04 = 31,467.60 : x
  2. Step 2: Convert to fraction form
    56,610/78,125.04 = 31,467.60/x
  3. Step 3: Cross multiply
    56,610x = 78,125.04 × 31,467.60
  4. Step 4: Simplify right side
    56,610x = 2,458,407,508.70
  5. Step 5: Solve for x
    x = 2,458,407,508.70/56,610
  6. Step 6: Final answer
    x = 43,427.09

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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.