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Finding the Fourth Proportional to 56,213.67, 77,579.78 and 31,068.03

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Solution

The fourth proportional to 56,213.67, 77,579.78 and 31,068.03 is: 42,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,213.67 : 77,579.78 = 31,068.03 : x
  2. Step 2: Convert to fraction form
    56,213.67/77,579.78 = 31,068.03/x
  3. Step 3: Cross multiply
    56,213.67x = 77,579.78 × 31,068.03
  4. Step 4: Simplify right side
    56,213.67x = 2,410,250,777.09
  5. Step 5: Solve for x
    x = 2,410,250,777.09/56,213.67
  6. Step 6: Final answer
    x = 42,876.60

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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.