Home / 65,428.45-98,142.66-21,058.66

Finding the Fourth Proportional to 65,428.45, 98,142.66 and 21,058.66

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Solution

The fourth proportional to 65,428.45, 98,142.66 and 21,058.66 is: 31,587.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,428.45 : 98,142.66 = 21,058.66 : x
  2. Step 2: Convert to fraction form
    65,428.45/98,142.66 = 21,058.66/x
  3. Step 3: Cross multiply
    65,428.45x = 98,142.66 × 21,058.66
  4. Step 4: Simplify right side
    65,428.45x = 2,066,752,908.44
  5. Step 5: Solve for x
    x = 2,066,752,908.44/65,428.45
  6. Step 6: Final answer
    x = 31,587.99

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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.