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Finding the Fourth Proportional to 78,601.61, 117,862.36 and 38,623.25

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Solution

The fourth proportional to 78,601.61, 117,862.36 and 38,623.25 is: 57,915.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,601.61 : 117,862.36 = 38,623.25 : x
  2. Step 2: Convert to fraction form
    78,601.61/117,862.36 = 38,623.25/x
  3. Step 3: Cross multiply
    78,601.61x = 117,862.36 × 38,623.25
  4. Step 4: Simplify right side
    78,601.61x = 4,552,227,395.87
  5. Step 5: Solve for x
    x = 4,552,227,395.87/78,601.61
  6. Step 6: Final answer
    x = 57,915.19

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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.