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Finding the Fourth Proportional to 86,058.78, 128,995.88 and 41,624.41

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Solution

The fourth proportional to 86,058.78, 128,995.88 and 41,624.41 is: 62,391.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,058.78 : 128,995.88 = 41,624.41 : x
  2. Step 2: Convert to fraction form
    86,058.78/128,995.88 = 41,624.41/x
  3. Step 3: Cross multiply
    86,058.78x = 128,995.88 × 41,624.41
  4. Step 4: Simplify right side
    86,058.78x = 5,369,377,397.43
  5. Step 5: Solve for x
    x = 5,369,377,397.43/86,058.78
  6. Step 6: Final answer
    x = 62,391.98

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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.