Home / 81,645.42-112,664.45-45,828.51

Finding the Fourth Proportional to 81,645.42, 112,664.45 and 45,828.51

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Solution

The fourth proportional to 81,645.42, 112,664.45 and 45,828.51 is: 63,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,645.42 : 112,664.45 = 45,828.51 : x
  2. Step 2: Convert to fraction form
    81,645.42/112,664.45 = 45,828.51/x
  3. Step 3: Cross multiply
    81,645.42x = 112,664.45 × 45,828.51
  4. Step 4: Simplify right side
    81,645.42x = 5,163,243,988.04
  5. Step 5: Solve for x
    x = 5,163,243,988.04/81,645.42
  6. Step 6: Final answer
    x = 63,239.85

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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.