Home / 56,428.03-84,615.51-20,864.78

Finding the Fourth Proportional to 56,428.03, 84,615.51 and 20,864.78

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Solution

The fourth proportional to 56,428.03, 84,615.51 and 20,864.78 is: 31,287.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,428.03 : 84,615.51 = 20,864.78 : x
  2. Step 2: Convert to fraction form
    56,428.03/84,615.51 = 20,864.78/x
  3. Step 3: Cross multiply
    56,428.03x = 84,615.51 × 20,864.78
  4. Step 4: Simplify right side
    56,428.03x = 1,765,483,577.66
  5. Step 5: Solve for x
    x = 1,765,483,577.66/56,428.03
  6. Step 6: Final answer
    x = 31,287.35

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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.