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Finding the Fourth Proportional to 85,453.86, 128,191.02 and 35,567.64

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Solution

The fourth proportional to 85,453.86, 128,191.02 and 35,567.64 is: 53,355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,453.86 : 128,191.02 = 35,567.64 : x
  2. Step 2: Convert to fraction form
    85,453.86/128,191.02 = 35,567.64/x
  3. Step 3: Cross multiply
    85,453.86x = 128,191.02 × 35,567.64
  4. Step 4: Simplify right side
    85,453.86x = 4,559,452,050.59
  5. Step 5: Solve for x
    x = 4,559,452,050.59/85,453.86
  6. Step 6: Final answer
    x = 53,355.72

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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.