Home / 77,434.64-116,138.10-20,508.93

Finding the Fourth Proportional to 77,434.64, 116,138.10 and 20,508.93

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Solution

The fourth proportional to 77,434.64, 116,138.10 and 20,508.93 is: 30,759.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,434.64 : 116,138.10 = 20,508.93 : x
  2. Step 2: Convert to fraction form
    77,434.64/116,138.10 = 20,508.93/x
  3. Step 3: Cross multiply
    77,434.64x = 116,138.10 × 20,508.93
  4. Step 4: Simplify right side
    77,434.64x = 2,381,868,163.23
  5. Step 5: Solve for x
    x = 2,381,868,163.23/77,434.64
  6. Step 6: Final answer
    x = 30,759.73

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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.