Home / 78,767.20-108,698.92-42,957.44

Finding the Fourth Proportional to 78,767.20, 108,698.92 and 42,957.44

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Solution

The fourth proportional to 78,767.20, 108,698.92 and 42,957.44 is: 59,281.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,767.20 : 108,698.92 = 42,957.44 : x
  2. Step 2: Convert to fraction form
    78,767.20/108,698.92 = 42,957.44/x
  3. Step 3: Cross multiply
    78,767.20x = 108,698.92 × 42,957.44
  4. Step 4: Simplify right side
    78,767.20x = 4,669,427,333.96
  5. Step 5: Solve for x
    x = 4,669,427,333.96/78,767.20
  6. Step 6: Final answer
    x = 59,281.37

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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.