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Finding the Fourth Proportional to 77,761.70, 116,642.55 and 76,465.70

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Solution

The fourth proportional to 77,761.70, 116,642.55 and 76,465.70 is: 114,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,761.70 : 116,642.55 = 76,465.70 : x
  2. Step 2: Convert to fraction form
    77,761.70/116,642.55 = 76,465.70/x
  3. Step 3: Cross multiply
    77,761.70x = 116,642.55 × 76,465.70
  4. Step 4: Simplify right side
    77,761.70x = 8,919,154,235.54
  5. Step 5: Solve for x
    x = 8,919,154,235.54/77,761.70
  6. Step 6: Final answer
    x = 114,698.55

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1.5x scale

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.