Home / 85,717.26-128,575.86-38,983.50

Finding the Fourth Proportional to 85,717.26, 128,575.86 and 38,983.50

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Solution

The fourth proportional to 85,717.26, 128,575.86 and 38,983.50 is: 58,475.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.26 : 128,575.86 = 38,983.50 : x
  2. Step 2: Convert to fraction form
    85,717.26/128,575.86 = 38,983.50/x
  3. Step 3: Cross multiply
    85,717.26x = 128,575.86 × 38,983.50
  4. Step 4: Simplify right side
    85,717.26x = 5,012,337,038.31
  5. Step 5: Solve for x
    x = 5,012,337,038.31/85,717.26
  6. Step 6: Final answer
    x = 58,475.24

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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.