Home / 85,721.36-128,545.96-32,404.32

Finding the Fourth Proportional to 85,721.36, 128,545.96 and 32,404.32

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Solution

The fourth proportional to 85,721.36, 128,545.96 and 32,404.32 is: 48,592.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,721.36 : 128,545.96 = 32,404.32 : x
  2. Step 2: Convert to fraction form
    85,721.36/128,545.96 = 32,404.32/x
  3. Step 3: Cross multiply
    85,721.36x = 128,545.96 × 32,404.32
  4. Step 4: Simplify right side
    85,721.36x = 4,165,444,422.55
  5. Step 5: Solve for x
    x = 4,165,444,422.55/85,721.36
  6. Step 6: Final answer
    x = 48,592.84

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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.