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Finding the Fourth Proportional to 86,807.76, 119,844.90 and 57,758.94

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Solution

The fourth proportional to 86,807.76, 119,844.90 and 57,758.94 is: 79,740.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,807.76 : 119,844.90 = 57,758.94 : x
  2. Step 2: Convert to fraction form
    86,807.76/119,844.90 = 57,758.94/x
  3. Step 3: Cross multiply
    86,807.76x = 119,844.90 × 57,758.94
  4. Step 4: Simplify right side
    86,807.76x = 6,922,114,388.41
  5. Step 5: Solve for x
    x = 6,922,114,388.41/86,807.76
  6. Step 6: Final answer
    x = 79,740.73

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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.