Home / 82,627.20-114,246.72-72,129.60

Finding the Fourth Proportional to 82,627.20, 114,246.72 and 72,129.60

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Solution

The fourth proportional to 82,627.20, 114,246.72 and 72,129.60 is: 99,731.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,627.20 : 114,246.72 = 72,129.60 : x
  2. Step 2: Convert to fraction form
    82,627.20/114,246.72 = 72,129.60/x
  3. Step 3: Cross multiply
    82,627.20x = 114,246.72 × 72,129.60
  4. Step 4: Simplify right side
    82,627.20x = 8,240,570,214.91
  5. Step 5: Solve for x
    x = 8,240,570,214.91/82,627.20
  6. Step 6: Final answer
    x = 99,731.93

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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.