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Finding the Fourth Proportional to 78,696.26, 108,600.84 and 42,886.26

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Solution

The fourth proportional to 78,696.26, 108,600.84 and 42,886.26 is: 59,183.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,696.26 : 108,600.84 = 42,886.26 : x
  2. Step 2: Convert to fraction form
    78,696.26/108,600.84 = 42,886.26/x
  3. Step 3: Cross multiply
    78,696.26x = 108,600.84 × 42,886.26
  4. Step 4: Simplify right side
    78,696.26x = 4,657,483,860.46
  5. Step 5: Solve for x
    x = 4,657,483,860.46/78,696.26
  6. Step 6: Final answer
    x = 59,183.04

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1.5x scale

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.