Home / 56,855.16-78,456.42-31,359.99

Finding the Fourth Proportional to 56,855.16, 78,456.42 and 31,359.99

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Solution

The fourth proportional to 56,855.16, 78,456.42 and 31,359.99 is: 43,274.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,855.16 : 78,456.42 = 31,359.99 : x
  2. Step 2: Convert to fraction form
    56,855.16/78,456.42 = 31,359.99/x
  3. Step 3: Cross multiply
    56,855.16x = 78,456.42 × 31,359.99
  4. Step 4: Simplify right side
    56,855.16x = 2,460,392,546.64
  5. Step 5: Solve for x
    x = 2,460,392,546.64/56,855.16
  6. Step 6: Final answer
    x = 43,274.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.