Home / 56,636.25-78,158.12-31,485.75

Finding the Fourth Proportional to 56,636.25, 78,158.12 and 31,485.75

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Solution

The fourth proportional to 56,636.25, 78,158.12 and 31,485.75 is: 43,450.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,636.25 : 78,158.12 = 31,485.75 : x
  2. Step 2: Convert to fraction form
    56,636.25/78,158.12 = 31,485.75/x
  3. Step 3: Cross multiply
    56,636.25x = 78,158.12 × 31,485.75
  4. Step 4: Simplify right side
    56,636.25x = 2,460,866,869.36
  5. Step 5: Solve for x
    x = 2,460,866,869.36/56,636.25
  6. Step 6: Final answer
    x = 43,450.39

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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.