Home / 76,772.20-115,331.10-74,698.60

Finding the Fourth Proportional to 76,772.20, 115,331.10 and 74,698.60

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Solution

The fourth proportional to 76,772.20, 115,331.10 and 74,698.60 is: 112,216.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,772.20 : 115,331.10 = 74,698.60 : x
  2. Step 2: Convert to fraction form
    76,772.20/115,331.10 = 74,698.60/x
  3. Step 3: Cross multiply
    76,772.20x = 115,331.10 × 74,698.60
  4. Step 4: Simplify right side
    76,772.20x = 8,615,071,706.46
  5. Step 5: Solve for x
    x = 8,615,071,706.46/76,772.20
  6. Step 6: Final answer
    x = 112,216.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.