Home / 56,813.28-78,405.84-31,319.52

Finding the Fourth Proportional to 56,813.28, 78,405.84 and 31,319.52

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Solution

The fourth proportional to 56,813.28, 78,405.84 and 31,319.52 is: 43,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,813.28 : 78,405.84 = 31,319.52 : x
  2. Step 2: Convert to fraction form
    56,813.28/78,405.84 = 31,319.52/x
  3. Step 3: Cross multiply
    56,813.28x = 78,405.84 × 31,319.52
  4. Step 4: Simplify right side
    56,813.28x = 2,455,633,274.00
  5. Step 5: Solve for x
    x = 2,455,633,274.00/56,813.28
  6. Step 6: Final answer
    x = 43,222.87

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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.