Home / 85,787.91-128,769.03-41,451.98

Finding the Fourth Proportional to 85,787.91, 128,769.03 and 41,451.98

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Solution

The fourth proportional to 85,787.91, 128,769.03 and 41,451.98 is: 62,220.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787.91 : 128,769.03 = 41,451.98 : x
  2. Step 2: Convert to fraction form
    85,787.91/128,769.03 = 41,451.98/x
  3. Step 3: Cross multiply
    85,787.91x = 128,769.03 × 41,451.98
  4. Step 4: Simplify right side
    85,787.91x = 5,337,730,612.33
  5. Step 5: Solve for x
    x = 5,337,730,612.33/85,787.91
  6. Step 6: Final answer
    x = 62,220.08

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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.