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Finding the Fourth Proportional to 81,483.44, 112,236.80 and 57,568.60

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Solution

The fourth proportional to 81,483.44, 112,236.80 and 57,568.60 is: 79,296.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,483.44 : 112,236.80 = 57,568.60 : x
  2. Step 2: Convert to fraction form
    81,483.44/112,236.80 = 57,568.60/x
  3. Step 3: Cross multiply
    81,483.44x = 112,236.80 × 57,568.60
  4. Step 4: Simplify right side
    81,483.44x = 6,461,315,444.48
  5. Step 5: Solve for x
    x = 6,461,315,444.48/81,483.44
  6. Step 6: Final answer
    x = 79,296.06

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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.