Home / 81,199.31-112,041.36-45,389.61

Finding the Fourth Proportional to 81,199.31, 112,041.36 and 45,389.61

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Solution

The fourth proportional to 81,199.31, 112,041.36 and 45,389.61 is: 62,630.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,199.31 : 112,041.36 = 45,389.61 : x
  2. Step 2: Convert to fraction form
    81,199.31/112,041.36 = 45,389.61/x
  3. Step 3: Cross multiply
    81,199.31x = 112,041.36 × 45,389.61
  4. Step 4: Simplify right side
    81,199.31x = 5,085,513,634.27
  5. Step 5: Solve for x
    x = 5,085,513,634.27/81,199.31
  6. Step 6: Final answer
    x = 62,630.01

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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.