Home / 81,722.04-112,778.12-45,914.36

Finding the Fourth Proportional to 81,722.04, 112,778.12 and 45,914.36

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Solution

The fourth proportional to 81,722.04, 112,778.12 and 45,914.36 is: 63,362.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,722.04 : 112,778.12 = 45,914.36 : x
  2. Step 2: Convert to fraction form
    81,722.04/112,778.12 = 45,914.36/x
  3. Step 3: Cross multiply
    81,722.04x = 112,778.12 × 45,914.36
  4. Step 4: Simplify right side
    81,722.04x = 5,178,134,911.29
  5. Step 5: Solve for x
    x = 5,178,134,911.29/81,722.04
  6. Step 6: Final answer
    x = 63,362.77

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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.