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Finding the Fourth Proportional to 81,959.81, 113,103.27 and 46,149.71

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Solution

The fourth proportional to 81,959.81, 113,103.27 and 46,149.71 is: 63,685.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,959.81 : 113,103.27 = 46,149.71 : x
  2. Step 2: Convert to fraction form
    81,959.81/113,103.27 = 46,149.71/x
  3. Step 3: Cross multiply
    81,959.81x = 113,103.27 × 46,149.71
  4. Step 4: Simplify right side
    81,959.81x = 5,219,683,110.55
  5. Step 5: Solve for x
    x = 5,219,683,110.55/81,959.81
  6. Step 6: Final answer
    x = 63,685.89

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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.