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Finding the Fourth Proportional to 80,681.81, 111,339.31 and 44,871.05

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Solution

The fourth proportional to 80,681.81, 111,339.31 and 44,871.05 is: 61,921.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,681.81 : 111,339.31 = 44,871.05 : x
  2. Step 2: Convert to fraction form
    80,681.81/111,339.31 = 44,871.05/x
  3. Step 3: Cross multiply
    80,681.81x = 111,339.31 × 44,871.05
  4. Step 4: Simplify right side
    80,681.81x = 4,995,911,745.98
  5. Step 5: Solve for x
    x = 4,995,911,745.98/80,681.81
  6. Step 6: Final answer
    x = 61,921.17

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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.