Home / 84,943.74-127,420.17-21,764.35

Finding the Fourth Proportional to 84,943.74, 127,420.17 and 21,764.35

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Solution

The fourth proportional to 84,943.74, 127,420.17 and 21,764.35 is: 32,647.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,943.74 : 127,420.17 = 21,764.35 : x
  2. Step 2: Convert to fraction form
    84,943.74/127,420.17 = 21,764.35/x
  3. Step 3: Cross multiply
    84,943.74x = 127,420.17 × 21,764.35
  4. Step 4: Simplify right side
    84,943.74x = 2,773,217,176.94
  5. Step 5: Solve for x
    x = 2,773,217,176.94/84,943.74
  6. Step 6: Final answer
    x = 32,647.69

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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.