Home / 85,529.20-128,293.80-26,359.60

Finding the Fourth Proportional to 85,529.20, 128,293.80 and 26,359.60

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Solution

The fourth proportional to 85,529.20, 128,293.80 and 26,359.60 is: 39,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,529.20 : 128,293.80 = 26,359.60 : x
  2. Step 2: Convert to fraction form
    85,529.20/128,293.80 = 26,359.60/x
  3. Step 3: Cross multiply
    85,529.20x = 128,293.80 × 26,359.60
  4. Step 4: Simplify right side
    85,529.20x = 3,381,773,250.48
  5. Step 5: Solve for x
    x = 3,381,773,250.48/85,529.20
  6. Step 6: Final answer
    x = 39,539.40

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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.