Home / 85,774.40-128,666.64-33,184.16

Finding the Fourth Proportional to 85,774.40, 128,666.64 and 33,184.16

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Solution

The fourth proportional to 85,774.40, 128,666.64 and 33,184.16 is: 49,778.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,774.40 : 128,666.64 = 33,184.16 : x
  2. Step 2: Convert to fraction form
    85,774.40/128,666.64 = 33,184.16/x
  3. Step 3: Cross multiply
    85,774.40x = 128,666.64 × 33,184.16
  4. Step 4: Simplify right side
    85,774.40x = 4,269,694,368.42
  5. Step 5: Solve for x
    x = 4,269,694,368.42/85,774.40
  6. Step 6: Final answer
    x = 49,778.19

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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.