Home / 77,428.11-116,141.88-51,126.60

Finding the Fourth Proportional to 77,428.11, 116,141.88 and 51,126.60

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Solution

The fourth proportional to 77,428.11, 116,141.88 and 51,126.60 is: 76,689.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,428.11 : 116,141.88 = 51,126.60 : x
  2. Step 2: Convert to fraction form
    77,428.11/116,141.88 = 51,126.60/x
  3. Step 3: Cross multiply
    77,428.11x = 116,141.88 × 51,126.60
  4. Step 4: Simplify right side
    77,428.11x = 5,937,939,442.01
  5. Step 5: Solve for x
    x = 5,937,939,442.01/77,428.11
  6. Step 6: Final answer
    x = 76,689.71

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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.