Home / 56,808.52-78,392.19-31,315.08

Finding the Fourth Proportional to 56,808.52, 78,392.19 and 31,315.08

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Solution

The fourth proportional to 56,808.52, 78,392.19 and 31,315.08 is: 43,212.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,808.52 : 78,392.19 = 31,315.08 : x
  2. Step 2: Convert to fraction form
    56,808.52/78,392.19 = 31,315.08/x
  3. Step 3: Cross multiply
    56,808.52x = 78,392.19 × 31,315.08
  4. Step 4: Simplify right side
    56,808.52x = 2,454,858,112.63
  5. Step 5: Solve for x
    x = 2,454,858,112.63/56,808.52
  6. Step 6: Final answer
    x = 43,212.85

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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.