Home / 54,798.20-82,197.30-31,405.40

Finding the Fourth Proportional to 54,798.20, 82,197.30 and 31,405.40

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Solution

The fourth proportional to 54,798.20, 82,197.30 and 31,405.40 is: 47,108.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,798.20 : 82,197.30 = 31,405.40 : x
  2. Step 2: Convert to fraction form
    54,798.20/82,197.30 = 31,405.40/x
  3. Step 3: Cross multiply
    54,798.20x = 82,197.30 × 31,405.40
  4. Step 4: Simplify right side
    54,798.20x = 2,581,439,085.42
  5. Step 5: Solve for x
    x = 2,581,439,085.42/54,798.20
  6. Step 6: Final answer
    x = 47,108.10

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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.