Home / 54,780.24-82,170-42,318.24

Finding the Fourth Proportional to 54,780.24, 82,170 and 42,318.24

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Solution

The fourth proportional to 54,780.24, 82,170 and 42,318.24 is: 63,477.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,780.24 : 82,170 = 42,318.24 : x
  2. Step 2: Convert to fraction form
    54,780.24/82,170 = 42,318.24/x
  3. Step 3: Cross multiply
    54,780.24x = 82,170 × 42,318.24
  4. Step 4: Simplify right side
    54,780.24x = 3,477,289,780.80
  5. Step 5: Solve for x
    x = 3,477,289,780.80/54,780.24
  6. Step 6: Final answer
    x = 63,477.08

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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.