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Finding the Fourth Proportional to 78,888.87, 118,156.79 and 36,705.75

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Solution

The fourth proportional to 78,888.87, 118,156.79 and 36,705.75 is: 54,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,888.87 : 118,156.79 = 36,705.75 : x
  2. Step 2: Convert to fraction form
    78,888.87/118,156.79 = 36,705.75/x
  3. Step 3: Cross multiply
    78,888.87x = 118,156.79 × 36,705.75
  4. Step 4: Simplify right side
    78,888.87x = 4,337,033,243.22
  5. Step 5: Solve for x
    x = 4,337,033,243.22/78,888.87
  6. Step 6: Final answer
    x = 54,976.49

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1.5x scale

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.