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Finding the Fourth Proportional to 56,441.92, 77,892.96 and 31,290.88

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Solution

The fourth proportional to 56,441.92, 77,892.96 and 31,290.88 is: 43,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,441.92 : 77,892.96 = 31,290.88 : x
  2. Step 2: Convert to fraction form
    56,441.92/77,892.96 = 31,290.88/x
  3. Step 3: Cross multiply
    56,441.92x = 77,892.96 × 31,290.88
  4. Step 4: Simplify right side
    56,441.92x = 2,437,339,264.20
  5. Step 5: Solve for x
    x = 2,437,339,264.20/56,441.92
  6. Step 6: Final answer
    x = 43,183.14

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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.