Home / 56,429.20-77,846.12-39,672.08

Finding the Fourth Proportional to 56,429.20, 77,846.12 and 39,672.08

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Solution

The fourth proportional to 56,429.20, 77,846.12 and 39,672.08 is: 54,729.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,429.20 : 77,846.12 = 39,672.08 : x
  2. Step 2: Convert to fraction form
    56,429.20/77,846.12 = 39,672.08/x
  3. Step 3: Cross multiply
    56,429.20x = 77,846.12 × 39,672.08
  4. Step 4: Simplify right side
    56,429.20x = 3,088,317,500.33
  5. Step 5: Solve for x
    x = 3,088,317,500.33/56,429.20
  6. Step 6: Final answer
    x = 54,729.07

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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.