Home / 82,731.20-124,096.80-51,238.40

Finding the Fourth Proportional to 82,731.20, 124,096.80 and 51,238.40

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Solution

The fourth proportional to 82,731.20, 124,096.80 and 51,238.40 is: 76,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,731.20 : 124,096.80 = 51,238.40 : x
  2. Step 2: Convert to fraction form
    82,731.20/124,096.80 = 51,238.40/x
  3. Step 3: Cross multiply
    82,731.20x = 124,096.80 × 51,238.40
  4. Step 4: Simplify right side
    82,731.20x = 6,358,521,477.12
  5. Step 5: Solve for x
    x = 6,358,521,477.12/82,731.20
  6. Step 6: Final answer
    x = 76,857.60

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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.