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Finding the Fourth Proportional to 76,415.66, 114,545.73 and 70,758.62

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Solution

The fourth proportional to 76,415.66, 114,545.73 and 70,758.62 is: 106,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,415.66 : 114,545.73 = 70,758.62 : x
  2. Step 2: Convert to fraction form
    76,415.66/114,545.73 = 70,758.62/x
  3. Step 3: Cross multiply
    76,415.66x = 114,545.73 × 70,758.62
  4. Step 4: Simplify right side
    76,415.66x = 8,105,097,781.69
  5. Step 5: Solve for x
    x = 8,105,097,781.69/76,415.66
  6. Step 6: Final answer
    x = 106,065.93

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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.