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Finding the Fourth Proportional to 56,989.35, 78,645.03 and 31,497.51

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Solution

The fourth proportional to 56,989.35, 78,645.03 and 31,497.51 is: 43,466.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,989.35 : 78,645.03 = 31,497.51 : x
  2. Step 2: Convert to fraction form
    56,989.35/78,645.03 = 31,497.51/x
  3. Step 3: Cross multiply
    56,989.35x = 78,645.03 × 31,497.51
  4. Step 4: Simplify right side
    56,989.35x = 2,477,122,618.88
  5. Step 5: Solve for x
    x = 2,477,122,618.88/56,989.35
  6. Step 6: Final answer
    x = 43,466.41

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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.