Home / 86,719.68-129,704.40-51,096.48

Finding the Fourth Proportional to 86,719.68, 129,704.40 and 51,096.48

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Solution

The fourth proportional to 86,719.68, 129,704.40 and 51,096.48 is: 76,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,719.68 : 129,704.40 = 51,096.48 : x
  2. Step 2: Convert to fraction form
    86,719.68/129,704.40 = 51,096.48/x
  3. Step 3: Cross multiply
    86,719.68x = 129,704.40 × 51,096.48
  4. Step 4: Simplify right side
    86,719.68x = 6,627,438,280.51
  5. Step 5: Solve for x
    x = 6,627,438,280.51/86,719.68
  6. Step 6: Final answer
    x = 76,423.69

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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.