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Finding the Fourth Proportional to 81,959.36, 112,883.04 and 70,761.92

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Solution

The fourth proportional to 81,959.36, 112,883.04 and 70,761.92 is: 97,460.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,959.36 : 112,883.04 = 70,761.92 : x
  2. Step 2: Convert to fraction form
    81,959.36/112,883.04 = 70,761.92/x
  3. Step 3: Cross multiply
    81,959.36x = 112,883.04 × 70,761.92
  4. Step 4: Simplify right side
    81,959.36x = 7,987,820,645.84
  5. Step 5: Solve for x
    x = 7,987,820,645.84/81,959.36
  6. Step 6: Final answer
    x = 97,460.75

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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.