Home / 85,626.84-128,406.98-29,456.28

Finding the Fourth Proportional to 85,626.84, 128,406.98 and 29,456.28

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Solution

The fourth proportional to 85,626.84, 128,406.98 and 29,456.28 is: 44,172.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,626.84 : 128,406.98 = 29,456.28 : x
  2. Step 2: Convert to fraction form
    85,626.84/128,406.98 = 29,456.28/x
  3. Step 3: Cross multiply
    85,626.84x = 128,406.98 × 29,456.28
  4. Step 4: Simplify right side
    85,626.84x = 3,782,391,956.83
  5. Step 5: Solve for x
    x = 3,782,391,956.83/85,626.84
  6. Step 6: Final answer
    x = 44,172.97

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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.