Home / 56,537.76-78,022.80-31,389.60

Finding the Fourth Proportional to 56,537.76, 78,022.80 and 31,389.60

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Solution

The fourth proportional to 56,537.76, 78,022.80 and 31,389.60 is: 43,318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,537.76 : 78,022.80 = 31,389.60 : x
  2. Step 2: Convert to fraction form
    56,537.76/78,022.80 = 31,389.60/x
  3. Step 3: Cross multiply
    56,537.76x = 78,022.80 × 31,389.60
  4. Step 4: Simplify right side
    56,537.76x = 2,449,104,482.88
  5. Step 5: Solve for x
    x = 2,449,104,482.88/56,537.76
  6. Step 6: Final answer
    x = 43,318.03

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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.