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Finding the Fourth Proportional to 81,810.48, 112,954.38 and 62,656.41

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Solution

The fourth proportional to 81,810.48, 112,954.38 and 62,656.41 is: 86,508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,810.48 : 112,954.38 = 62,656.41 : x
  2. Step 2: Convert to fraction form
    81,810.48/112,954.38 = 62,656.41/x
  3. Step 3: Cross multiply
    81,810.48x = 112,954.38 × 62,656.41
  4. Step 4: Simplify right side
    81,810.48x = 7,077,315,944.58
  5. Step 5: Solve for x
    x = 7,077,315,944.58/81,810.48
  6. Step 6: Final answer
    x = 86,508.67

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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.