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Finding the Fourth Proportional to 30,892.70, 43,308.10 and 30,892.70

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Solution

The fourth proportional to 30,892.70, 43,308.10 and 30,892.70 is: 43,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,892.70 : 43,308.10 = 30,892.70 : x
  2. Step 2: Convert to fraction form
    30,892.70/43,308.10 = 30,892.70/x
  3. Step 3: Cross multiply
    30,892.70x = 43,308.10 × 30,892.70
  4. Step 4: Simplify right side
    30,892.70x = 1,337,904,140.87
  5. Step 5: Solve for x
    x = 1,337,904,140.87/30,892.70
  6. Step 6: Final answer
    x = 43,308.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.