Home / 56,839.87-78,439.40-31,347.14

Finding the Fourth Proportional to 56,839.87, 78,439.40 and 31,347.14

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Solution

The fourth proportional to 56,839.87, 78,439.40 and 31,347.14 is: 43,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,839.87 : 78,439.40 = 31,347.14 : x
  2. Step 2: Convert to fraction form
    56,839.87/78,439.40 = 31,347.14/x
  3. Step 3: Cross multiply
    56,839.87x = 78,439.40 × 31,347.14
  4. Step 4: Simplify right side
    56,839.87x = 2,458,850,853.32
  5. Step 5: Solve for x
    x = 2,458,850,853.32/56,839.87
  6. Step 6: Final answer
    x = 43,259.26

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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.