Home / 85,577.28-128,366.28-56,181.12

Finding the Fourth Proportional to 85,577.28, 128,366.28 and 56,181.12

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Solution

The fourth proportional to 85,577.28, 128,366.28 and 56,181.12 is: 84,271.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,577.28 : 128,366.28 = 56,181.12 : x
  2. Step 2: Convert to fraction form
    85,577.28/128,366.28 = 56,181.12/x
  3. Step 3: Cross multiply
    85,577.28x = 128,366.28 × 56,181.12
  4. Step 4: Simplify right side
    85,577.28x = 7,211,761,380.63
  5. Step 5: Solve for x
    x = 7,211,761,380.63/85,577.28
  6. Step 6: Final answer
    x = 84,271.92

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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.