Home / 76,134.78-114,155.93-38,139.87

Finding the Fourth Proportional to 76,134.78, 114,155.93 and 38,139.87

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Solution

The fourth proportional to 76,134.78, 114,155.93 and 38,139.87 is: 57,186.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,134.78 : 114,155.93 = 38,139.87 : x
  2. Step 2: Convert to fraction form
    76,134.78/114,155.93 = 38,139.87/x
  3. Step 3: Cross multiply
    76,134.78x = 114,155.93 × 38,139.87
  4. Step 4: Simplify right side
    76,134.78x = 4,353,892,329.93
  5. Step 5: Solve for x
    x = 4,353,892,329.93/76,134.78
  6. Step 6: Final answer
    x = 57,186.64

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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.