Home / 56,909.97-78,533.70-31,415.79

Finding the Fourth Proportional to 56,909.97, 78,533.70 and 31,415.79

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Solution

The fourth proportional to 56,909.97, 78,533.70 and 31,415.79 is: 43,352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,909.97 : 78,533.70 = 31,415.79 : x
  2. Step 2: Convert to fraction form
    56,909.97/78,533.70 = 31,415.79/x
  3. Step 3: Cross multiply
    56,909.97x = 78,533.70 × 31,415.79
  4. Step 4: Simplify right side
    56,909.97x = 2,467,197,942.44
  5. Step 5: Solve for x
    x = 2,467,197,942.44/56,909.97
  6. Step 6: Final answer
    x = 43,352.65

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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.