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Finding the Fourth Proportional to 61,018.68, 84,213.72 and 34,171.44

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Solution

The fourth proportional to 61,018.68, 84,213.72 and 34,171.44 is: 47,161.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,018.68 : 84,213.72 = 34,171.44 : x
  2. Step 2: Convert to fraction form
    61,018.68/84,213.72 = 34,171.44/x
  3. Step 3: Cross multiply
    61,018.68x = 84,213.72 × 34,171.44
  4. Step 4: Simplify right side
    61,018.68x = 2,877,704,080.16
  5. Step 5: Solve for x
    x = 2,877,704,080.16/61,018.68
  6. Step 6: Final answer
    x = 47,161.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.