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Finding the Fourth Proportional to 78,774.65, 108,708.53 and 44,783.15

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Solution

The fourth proportional to 78,774.65, 108,708.53 and 44,783.15 is: 61,800.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,774.65 : 108,708.53 = 44,783.15 : x
  2. Step 2: Convert to fraction form
    78,774.65/108,708.53 = 44,783.15/x
  3. Step 3: Cross multiply
    78,774.65x = 108,708.53 × 44,783.15
  4. Step 4: Simplify right side
    78,774.65x = 4,868,310,405.27
  5. Step 5: Solve for x
    x = 4,868,310,405.27/78,774.65
  6. Step 6: Final answer
    x = 61,800.47

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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.