Home / 81,575.45-122,386.86-28,989.03

Finding the Fourth Proportional to 81,575.45, 122,386.86 and 28,989.03

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Solution

The fourth proportional to 81,575.45, 122,386.86 and 28,989.03 is: 43,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,575.45 : 122,386.86 = 28,989.03 : x
  2. Step 2: Convert to fraction form
    81,575.45/122,386.86 = 28,989.03/x
  3. Step 3: Cross multiply
    81,575.45x = 122,386.86 × 28,989.03
  4. Step 4: Simplify right side
    81,575.45x = 3,547,876,356.15
  5. Step 5: Solve for x
    x = 3,547,876,356.15/81,575.45
  6. Step 6: Final answer
    x = 43,491.96

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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.