Home / 56,853.28-78,426.03-39,882.79

Finding the Fourth Proportional to 56,853.28, 78,426.03 and 39,882.79

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Solution

The fourth proportional to 56,853.28, 78,426.03 and 39,882.79 is: 55,016.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,853.28 : 78,426.03 = 39,882.79 : x
  2. Step 2: Convert to fraction form
    56,853.28/78,426.03 = 39,882.79/x
  3. Step 3: Cross multiply
    56,853.28x = 78,426.03 × 39,882.79
  4. Step 4: Simplify right side
    56,853.28x = 3,127,848,885.02
  5. Step 5: Solve for x
    x = 3,127,848,885.02/56,853.28
  6. Step 6: Final answer
    x = 55,016.16

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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.