Home / 78,576.28-108,431.72-42,766.20

Finding the Fourth Proportional to 78,576.28, 108,431.72 and 42,766.20

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Solution

The fourth proportional to 78,576.28, 108,431.72 and 42,766.20 is: 59,015.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,576.28 : 108,431.72 = 42,766.20 : x
  2. Step 2: Convert to fraction form
    78,576.28/108,431.72 = 42,766.20/x
  3. Step 3: Cross multiply
    78,576.28x = 108,431.72 × 42,766.20
  4. Step 4: Simplify right side
    78,576.28x = 4,637,212,623.86
  5. Step 5: Solve for x
    x = 4,637,212,623.86/78,576.28
  6. Step 6: Final answer
    x = 59,015.43

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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.