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Finding the Fourth Proportional to 85,675.70, 128,513.52 and 23,346.20

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Solution

The fourth proportional to 85,675.70, 128,513.52 and 23,346.20 is: 35,019.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,675.70 : 128,513.52 = 23,346.20 : x
  2. Step 2: Convert to fraction form
    85,675.70/128,513.52 = 23,346.20/x
  3. Step 3: Cross multiply
    85,675.70x = 128,513.52 × 23,346.20
  4. Step 4: Simplify right side
    85,675.70x = 3,000,302,340.62
  5. Step 5: Solve for x
    x = 3,000,302,340.62/85,675.70
  6. Step 6: Final answer
    x = 35,019.29

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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.