Home / 78,968.19-108,975.85-43,158.20

Finding the Fourth Proportional to 78,968.19, 108,975.85 and 43,158.20

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Solution

The fourth proportional to 78,968.19, 108,975.85 and 43,158.20 is: 59,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,968.19 : 108,975.85 = 43,158.20 : x
  2. Step 2: Convert to fraction form
    78,968.19/108,975.85 = 43,158.20/x
  3. Step 3: Cross multiply
    78,968.19x = 108,975.85 × 43,158.20
  4. Step 4: Simplify right side
    78,968.19x = 4,703,200,876.70
  5. Step 5: Solve for x
    x = 4,703,200,876.70/78,968.19
  6. Step 6: Final answer
    x = 59,558.17

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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.