Home / 81,519.81-112,495.01-49,677.09

Finding the Fourth Proportional to 81,519.81, 112,495.01 and 49,677.09

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Solution

The fourth proportional to 81,519.81, 112,495.01 and 49,677.09 is: 68,552.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,519.81 : 112,495.01 = 49,677.09 : x
  2. Step 2: Convert to fraction form
    81,519.81/112,495.01 = 49,677.09/x
  3. Step 3: Cross multiply
    81,519.81x = 112,495.01 × 49,677.09
  4. Step 4: Simplify right side
    81,519.81x = 5,588,424,487.94
  5. Step 5: Solve for x
    x = 5,588,424,487.94/81,519.81
  6. Step 6: Final answer
    x = 68,552.96

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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.