Home / 81,537.20-112,473.60-51,274.64

Finding the Fourth Proportional to 81,537.20, 112,473.60 and 51,274.64

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Solution

The fourth proportional to 81,537.20, 112,473.60 and 51,274.64 is: 70,728.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,537.20 : 112,473.60 = 51,274.64 : x
  2. Step 2: Convert to fraction form
    81,537.20/112,473.60 = 51,274.64/x
  3. Step 3: Cross multiply
    81,537.20x = 112,473.60 × 51,274.64
  4. Step 4: Simplify right side
    81,537.20x = 5,767,043,349.50
  5. Step 5: Solve for x
    x = 5,767,043,349.50/81,537.20
  6. Step 6: Final answer
    x = 70,728.98

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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.