Home / 77,671.18-107,377.32-76,960.71

Finding the Fourth Proportional to 77,671.18, 107,377.32 and 76,960.71

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Solution

The fourth proportional to 77,671.18, 107,377.32 and 76,960.71 is: 106,395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,671.18 : 107,377.32 = 76,960.71 : x
  2. Step 2: Convert to fraction form
    77,671.18/107,377.32 = 76,960.71/x
  3. Step 3: Cross multiply
    77,671.18x = 107,377.32 × 76,960.71
  4. Step 4: Simplify right side
    77,671.18x = 8,263,834,785.10
  5. Step 5: Solve for x
    x = 8,263,834,785.10/77,671.18
  6. Step 6: Final answer
    x = 106,395.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.