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Finding the Fourth Proportional to 81,322.78, 112,237.21 and 46,860.80

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Solution

The fourth proportional to 81,322.78, 112,237.21 and 46,860.80 is: 64,674.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,322.78 : 112,237.21 = 46,860.80 : x
  2. Step 2: Convert to fraction form
    81,322.78/112,237.21 = 46,860.80/x
  3. Step 3: Cross multiply
    81,322.78x = 112,237.21 × 46,860.80
  4. Step 4: Simplify right side
    81,322.78x = 5,259,525,848.11
  5. Step 5: Solve for x
    x = 5,259,525,848.11/81,322.78
  6. Step 6: Final answer
    x = 64,674.70

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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.