Home / 74,072.55-111,119.77-21,475.20

Finding the Fourth Proportional to 74,072.55, 111,119.77 and 21,475.20

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Solution

The fourth proportional to 74,072.55, 111,119.77 and 21,475.20 is: 32,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,072.55 : 111,119.77 = 21,475.20 : x
  2. Step 2: Convert to fraction form
    74,072.55/111,119.77 = 21,475.20/x
  3. Step 3: Cross multiply
    74,072.55x = 111,119.77 × 21,475.20
  4. Step 4: Simplify right side
    74,072.55x = 2,386,319,728.25
  5. Step 5: Solve for x
    x = 2,386,319,728.25/74,072.55
  6. Step 6: Final answer
    x = 32,215.98

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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.