Home / 43,279.60-64,870.80-18,315.40

Finding the Fourth Proportional to 43,279.60, 64,870.80 and 18,315.40

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Solution

The fourth proportional to 43,279.60, 64,870.80 and 18,315.40 is: 27,452.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,279.60 : 64,870.80 = 18,315.40 : x
  2. Step 2: Convert to fraction form
    43,279.60/64,870.80 = 18,315.40/x
  3. Step 3: Cross multiply
    43,279.60x = 64,870.80 × 18,315.40
  4. Step 4: Simplify right side
    43,279.60x = 1,188,134,650.32
  5. Step 5: Solve for x
    x = 1,188,134,650.32/43,279.60
  6. Step 6: Final answer
    x = 27,452.53

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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.