Home / 76,848.40-106,048.68-42,857.92

Finding the Fourth Proportional to 76,848.40, 106,048.68 and 42,857.92

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Solution

The fourth proportional to 76,848.40, 106,048.68 and 42,857.92 is: 59,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,848.40 : 106,048.68 = 42,857.92 : x
  2. Step 2: Convert to fraction form
    76,848.40/106,048.68 = 42,857.92/x
  3. Step 3: Cross multiply
    76,848.40x = 106,048.68 × 42,857.92
  4. Step 4: Simplify right side
    76,848.40x = 4,545,025,843.55
  5. Step 5: Solve for x
    x = 4,545,025,843.55/76,848.40
  6. Step 6: Final answer
    x = 59,142.75

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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.