Home / 56,769.21-78,347.62-31,278.16

Finding the Fourth Proportional to 56,769.21, 78,347.62 and 31,278.16

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Solution

The fourth proportional to 56,769.21, 78,347.62 and 31,278.16 is: 43,167.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,769.21 : 78,347.62 = 31,278.16 : x
  2. Step 2: Convert to fraction form
    56,769.21/78,347.62 = 31,278.16/x
  3. Step 3: Cross multiply
    56,769.21x = 78,347.62 × 31,278.16
  4. Step 4: Simplify right side
    56,769.21x = 2,450,569,090.31
  5. Step 5: Solve for x
    x = 2,450,569,090.31/56,769.21
  6. Step 6: Final answer
    x = 43,167.22

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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.