Home / 45,356.20-68,034.30-31,359.40

Finding the Fourth Proportional to 45,356.20, 68,034.30 and 31,359.40

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Solution

The fourth proportional to 45,356.20, 68,034.30 and 31,359.40 is: 47,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,356.20 : 68,034.30 = 31,359.40 : x
  2. Step 2: Convert to fraction form
    45,356.20/68,034.30 = 31,359.40/x
  3. Step 3: Cross multiply
    45,356.20x = 68,034.30 × 31,359.40
  4. Step 4: Simplify right side
    45,356.20x = 2,133,514,827.42
  5. Step 5: Solve for x
    x = 2,133,514,827.42/45,356.20
  6. Step 6: Final answer
    x = 47,039.10

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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.