Home / 85,388.04-128,082.06-43,808.52

Finding the Fourth Proportional to 85,388.04, 128,082.06 and 43,808.52

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Solution

The fourth proportional to 85,388.04, 128,082.06 and 43,808.52 is: 65,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,388.04 : 128,082.06 = 43,808.52 : x
  2. Step 2: Convert to fraction form
    85,388.04/128,082.06 = 43,808.52/x
  3. Step 3: Cross multiply
    85,388.04x = 128,082.06 × 43,808.52
  4. Step 4: Simplify right side
    85,388.04x = 5,611,085,487.15
  5. Step 5: Solve for x
    x = 5,611,085,487.15/85,388.04
  6. Step 6: Final answer
    x = 65,712.78

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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.