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Finding the Fourth Proportional to 56,731.64, 84,860.43 and 39,863.46

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Solution

The fourth proportional to 56,731.64, 84,860.43 and 39,863.46 is: 59,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,731.64 : 84,860.43 = 39,863.46 : x
  2. Step 2: Convert to fraction form
    56,731.64/84,860.43 = 39,863.46/x
  3. Step 3: Cross multiply
    56,731.64x = 84,860.43 × 39,863.46
  4. Step 4: Simplify right side
    56,731.64x = 3,382,830,356.89
  5. Step 5: Solve for x
    x = 3,382,830,356.89/56,731.64
  6. Step 6: Final answer
    x = 59,628.64

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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.