Home / 56,731.55-78,288.90-31,237.39

Finding the Fourth Proportional to 56,731.55, 78,288.90 and 31,237.39

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Solution

The fourth proportional to 56,731.55, 78,288.90 and 31,237.39 is: 43,107.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.55 : 78,288.90 = 31,237.39 : x
  2. Step 2: Convert to fraction form
    56,731.55/78,288.90 = 31,237.39/x
  3. Step 3: Cross multiply
    56,731.55x = 78,288.90 × 31,237.39
  4. Step 4: Simplify right side
    56,731.55x = 2,445,540,706.25
  5. Step 5: Solve for x
    x = 2,445,540,706.25/56,731.55
  6. Step 6: Final answer
    x = 43,107.24

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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.