Home / 85,972.43-128,911.38-29,807.52

Finding the Fourth Proportional to 85,972.43, 128,911.38 and 29,807.52

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Solution

The fourth proportional to 85,972.43, 128,911.38 and 29,807.52 is: 44,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,972.43 : 128,911.38 = 29,807.52 : x
  2. Step 2: Convert to fraction form
    85,972.43/128,911.38 = 29,807.52/x
  3. Step 3: Cross multiply
    85,972.43x = 128,911.38 × 29,807.52
  4. Step 4: Simplify right side
    85,972.43x = 3,842,528,537.58
  5. Step 5: Solve for x
    x = 3,842,528,537.58/85,972.43
  6. Step 6: Final answer
    x = 44,694.90

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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.