Home / 56,839.59-78,436.80-31,347.01

Finding the Fourth Proportional to 56,839.59, 78,436.80 and 31,347.01

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Solution

The fourth proportional to 56,839.59, 78,436.80 and 31,347.01 is: 43,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,839.59 : 78,436.80 = 31,347.01 : x
  2. Step 2: Convert to fraction form
    56,839.59/78,436.80 = 31,347.01/x
  3. Step 3: Cross multiply
    56,839.59x = 78,436.80 × 31,347.01
  4. Step 4: Simplify right side
    56,839.59x = 2,458,759,153.97
  5. Step 5: Solve for x
    x = 2,458,759,153.97/56,839.59
  6. Step 6: Final answer
    x = 43,257.86

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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.