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Finding the Fourth Proportional to 85,070.56, 127,572.72 and 35,158.72

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Solution

The fourth proportional to 85,070.56, 127,572.72 and 35,158.72 is: 52,724.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.56 : 127,572.72 = 35,158.72 : x
  2. Step 2: Convert to fraction form
    85,070.56/127,572.72 = 35,158.72/x
  3. Step 3: Cross multiply
    85,070.56x = 127,572.72 × 35,158.72
  4. Step 4: Simplify right side
    85,070.56x = 4,485,293,542.12
  5. Step 5: Solve for x
    x = 4,485,293,542.12/85,070.56
  6. Step 6: Final answer
    x = 52,724.39

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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.