Home / 85,414.16-128,147.04-38,667.44

Finding the Fourth Proportional to 85,414.16, 128,147.04 and 38,667.44

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Solution

The fourth proportional to 85,414.16, 128,147.04 and 38,667.44 is: 58,012.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414.16 : 128,147.04 = 38,667.44 : x
  2. Step 2: Convert to fraction form
    85,414.16/128,147.04 = 38,667.44/x
  3. Step 3: Cross multiply
    85,414.16x = 128,147.04 × 38,667.44
  4. Step 4: Simplify right side
    85,414.16x = 4,955,117,980.38
  5. Step 5: Solve for x
    x = 4,955,117,980.38/85,414.16
  6. Step 6: Final answer
    x = 58,012.84

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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.