Home / 85,717.24-128,575.84-38,983.48

Finding the Fourth Proportional to 85,717.24, 128,575.84 and 38,983.48

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Solution

The fourth proportional to 85,717.24, 128,575.84 and 38,983.48 is: 58,475.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.24 : 128,575.84 = 38,983.48 : x
  2. Step 2: Convert to fraction form
    85,717.24/128,575.84 = 38,983.48/x
  3. Step 3: Cross multiply
    85,717.24x = 128,575.84 × 38,983.48
  4. Step 4: Simplify right side
    85,717.24x = 5,012,333,687.12
  5. Step 5: Solve for x
    x = 5,012,333,687.12/85,717.24
  6. Step 6: Final answer
    x = 58,475.21

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1.5x scale

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.