Home / 85,648.12-128,333.94-52,747

Finding the Fourth Proportional to 85,648.12, 128,333.94 and 52,747

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Solution

The fourth proportional to 85,648.12, 128,333.94 and 52,747 is: 79,035.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,648.12 : 128,333.94 = 52,747 : x
  2. Step 2: Convert to fraction form
    85,648.12/128,333.94 = 52,747/x
  3. Step 3: Cross multiply
    85,648.12x = 128,333.94 × 52,747
  4. Step 4: Simplify right side
    85,648.12x = 6,769,230,333.18
  5. Step 5: Solve for x
    x = 6,769,230,333.18/85,648.12
  6. Step 6: Final answer
    x = 79,035.36

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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.