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Finding the Fourth Proportional to 78,611.87, 117,848.13 and 56,369.27

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Solution

The fourth proportional to 78,611.87, 117,848.13 and 56,369.27 is: 84,503.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,611.87 : 117,848.13 = 56,369.27 : x
  2. Step 2: Convert to fraction form
    78,611.87/117,848.13 = 56,369.27/x
  3. Step 3: Cross multiply
    78,611.87x = 117,848.13 × 56,369.27
  4. Step 4: Simplify right side
    78,611.87x = 6,643,013,058.97
  5. Step 5: Solve for x
    x = 6,643,013,058.97/78,611.87
  6. Step 6: Final answer
    x = 84,503.94

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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.