Home / 78,486.14-108,310.34-42,676.18

Finding the Fourth Proportional to 78,486.14, 108,310.34 and 42,676.18

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Solution

The fourth proportional to 78,486.14, 108,310.34 and 42,676.18 is: 58,892.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,486.14 : 108,310.34 = 42,676.18 : x
  2. Step 2: Convert to fraction form
    78,486.14/108,310.34 = 42,676.18/x
  3. Step 3: Cross multiply
    78,486.14x = 108,310.34 × 42,676.18
  4. Step 4: Simplify right side
    78,486.14x = 4,622,271,565.70
  5. Step 5: Solve for x
    x = 4,622,271,565.70/78,486.14
  6. Step 6: Final answer
    x = 58,892.84

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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.