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Finding the Fourth Proportional to 85,464.72, 128,177.64 and 32,847.12

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Solution

The fourth proportional to 85,464.72, 128,177.64 and 32,847.12 is: 49,263.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464.72 : 128,177.64 = 32,847.12 : x
  2. Step 2: Convert to fraction form
    85,464.72/128,177.64 = 32,847.12/x
  3. Step 3: Cross multiply
    85,464.72x = 128,177.64 × 32,847.12
  4. Step 4: Simplify right side
    85,464.72x = 4,210,266,322.40
  5. Step 5: Solve for x
    x = 4,210,266,322.40/85,464.72
  6. Step 6: Final answer
    x = 49,263.21

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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.