Home / 82,969.60-124,432.08-30,379.36

Finding the Fourth Proportional to 82,969.60, 124,432.08 and 30,379.36

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Solution

The fourth proportional to 82,969.60, 124,432.08 and 30,379.36 is: 45,560.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,969.60 : 124,432.08 = 30,379.36 : x
  2. Step 2: Convert to fraction form
    82,969.60/124,432.08 = 30,379.36/x
  3. Step 3: Cross multiply
    82,969.60x = 124,432.08 × 30,379.36
  4. Step 4: Simplify right side
    82,969.60x = 3,780,166,953.87
  5. Step 5: Solve for x
    x = 3,780,166,953.87/82,969.60
  6. Step 6: Final answer
    x = 45,560.87

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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.