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Finding the Fourth Proportional to 78,980.18, 108,992.66 and 44,991.84

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Solution

The fourth proportional to 78,980.18, 108,992.66 and 44,991.84 is: 62,088.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,980.18 : 108,992.66 = 44,991.84 : x
  2. Step 2: Convert to fraction form
    78,980.18/108,992.66 = 44,991.84/x
  3. Step 3: Cross multiply
    78,980.18x = 108,992.66 × 44,991.84
  4. Step 4: Simplify right side
    78,980.18x = 4,903,780,094.94
  5. Step 5: Solve for x
    x = 4,903,780,094.94/78,980.18
  6. Step 6: Final answer
    x = 62,088.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.