Home / 69,081.90-103,699.65-42,816.30

Finding the Fourth Proportional to 69,081.90, 103,699.65 and 42,816.30

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Solution

The fourth proportional to 69,081.90, 103,699.65 and 42,816.30 is: 64,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,081.90 : 103,699.65 = 42,816.30 : x
  2. Step 2: Convert to fraction form
    69,081.90/103,699.65 = 42,816.30/x
  3. Step 3: Cross multiply
    69,081.90x = 103,699.65 × 42,816.30
  4. Step 4: Simplify right side
    69,081.90x = 4,440,035,324.30
  5. Step 5: Solve for x
    x = 4,440,035,324.30/69,081.90
  6. Step 6: Final answer
    x = 64,272.05

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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.