Home / 81,266.63-121,948.38-36,284.49

Finding the Fourth Proportional to 81,266.63, 121,948.38 and 36,284.49

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Solution

The fourth proportional to 81,266.63, 121,948.38 and 36,284.49 is: 54,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,266.63 : 121,948.38 = 36,284.49 : x
  2. Step 2: Convert to fraction form
    81,266.63/121,948.38 = 36,284.49/x
  3. Step 3: Cross multiply
    81,266.63x = 121,948.38 × 36,284.49
  4. Step 4: Simplify right side
    81,266.63x = 4,424,834,774.63
  5. Step 5: Solve for x
    x = 4,424,834,774.63/81,266.63
  6. Step 6: Final answer
    x = 54,448.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.