Home / 85,529.25-128,299.15-32,938.78

Finding the Fourth Proportional to 85,529.25, 128,299.15 and 32,938.78

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Solution

The fourth proportional to 85,529.25, 128,299.15 and 32,938.78 is: 49,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,529.25 : 128,299.15 = 32,938.78 : x
  2. Step 2: Convert to fraction form
    85,529.25/128,299.15 = 32,938.78/x
  3. Step 3: Cross multiply
    85,529.25x = 128,299.15 × 32,938.78
  4. Step 4: Simplify right side
    85,529.25x = 4,226,017,476.04
  5. Step 5: Solve for x
    x = 4,226,017,476.04/85,529.25
  6. Step 6: Final answer
    x = 49,410.20

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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.