Home / 81,173.64-112,090.98-51,011.40

Finding the Fourth Proportional to 81,173.64, 112,090.98 and 51,011.40

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Solution

The fourth proportional to 81,173.64, 112,090.98 and 51,011.40 is: 70,440.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,173.64 : 112,090.98 = 51,011.40 : x
  2. Step 2: Convert to fraction form
    81,173.64/112,090.98 = 51,011.40/x
  3. Step 3: Cross multiply
    81,173.64x = 112,090.98 × 51,011.40
  4. Step 4: Simplify right side
    81,173.64x = 5,717,917,817.17
  5. Step 5: Solve for x
    x = 5,717,917,817.17/81,173.64
  6. Step 6: Final answer
    x = 70,440.57

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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.