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Finding the Fourth Proportional to 81,453.58, 112,412.25 and 45,646.92

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Solution

The fourth proportional to 81,453.58, 112,412.25 and 45,646.92 is: 62,996.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,453.58 : 112,412.25 = 45,646.92 : x
  2. Step 2: Convert to fraction form
    81,453.58/112,412.25 = 45,646.92/x
  3. Step 3: Cross multiply
    81,453.58x = 112,412.25 × 45,646.92
  4. Step 4: Simplify right side
    81,453.58x = 5,131,272,982.77
  5. Step 5: Solve for x
    x = 5,131,272,982.77/81,453.58
  6. Step 6: Final answer
    x = 62,996.29

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1.5x scale

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.