Home / 74,176.55-111,256.62-20,870.21

Finding the Fourth Proportional to 74,176.55, 111,256.62 and 20,870.21

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Solution

The fourth proportional to 74,176.55, 111,256.62 and 20,870.21 is: 31,303.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,176.55 : 111,256.62 = 20,870.21 : x
  2. Step 2: Convert to fraction form
    74,176.55/111,256.62 = 20,870.21/x
  3. Step 3: Cross multiply
    74,176.55x = 111,256.62 × 20,870.21
  4. Step 4: Simplify right side
    74,176.55x = 2,321,948,467.01
  5. Step 5: Solve for x
    x = 2,321,948,467.01/74,176.55
  6. Step 6: Final answer
    x = 31,303.00

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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.