Home / 43,129.20-64,655.40-38,463.60

Finding the Fourth Proportional to 43,129.20, 64,655.40 and 38,463.60

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Solution

The fourth proportional to 43,129.20, 64,655.40 and 38,463.60 is: 57,661.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,129.20 : 64,655.40 = 38,463.60 : x
  2. Step 2: Convert to fraction form
    43,129.20/64,655.40 = 38,463.60/x
  3. Step 3: Cross multiply
    43,129.20x = 64,655.40 × 38,463.60
  4. Step 4: Simplify right side
    43,129.20x = 2,486,879,443.44
  5. Step 5: Solve for x
    x = 2,486,879,443.44/43,129.20
  6. Step 6: Final answer
    x = 57,661.15

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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.