Home / 77,705.12-116,307.03-40,213.61

Finding the Fourth Proportional to 77,705.12, 116,307.03 and 40,213.61

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Solution

The fourth proportional to 77,705.12, 116,307.03 and 40,213.61 is: 60,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,705.12 : 116,307.03 = 40,213.61 : x
  2. Step 2: Convert to fraction form
    77,705.12/116,307.03 = 40,213.61/x
  3. Step 3: Cross multiply
    77,705.12x = 116,307.03 × 40,213.61
  4. Step 4: Simplify right side
    77,705.12x = 4,677,125,544.68
  5. Step 5: Solve for x
    x = 4,677,125,544.68/77,705.12
  6. Step 6: Final answer
    x = 60,190.70

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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.