Home / 81,415.24-112,351.36-45,116.38

Finding the Fourth Proportional to 81,415.24, 112,351.36 and 45,116.38

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Solution

The fourth proportional to 81,415.24, 112,351.36 and 45,116.38 is: 62,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,415.24 : 112,351.36 = 45,116.38 : x
  2. Step 2: Convert to fraction form
    81,415.24/112,351.36 = 45,116.38/x
  3. Step 3: Cross multiply
    81,415.24x = 112,351.36 × 45,116.38
  4. Step 4: Simplify right side
    81,415.24x = 5,068,886,651.28
  5. Step 5: Solve for x
    x = 5,068,886,651.28/81,415.24
  6. Step 6: Final answer
    x = 62,259.68

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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.