Home / 56,679.36-85,030.56-19,769.28

Finding the Fourth Proportional to 56,679.36, 85,030.56 and 19,769.28

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Solution

The fourth proportional to 56,679.36, 85,030.56 and 19,769.28 is: 29,657.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,679.36 : 85,030.56 = 19,769.28 : x
  2. Step 2: Convert to fraction form
    56,679.36/85,030.56 = 19,769.28/x
  3. Step 3: Cross multiply
    56,679.36x = 85,030.56 × 19,769.28
  4. Step 4: Simplify right side
    56,679.36x = 1,680,992,949.20
  5. Step 5: Solve for x
    x = 1,680,992,949.20/56,679.36
  6. Step 6: Final answer
    x = 29,657.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.