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Finding the Fourth Proportional to 56,886.69, 85,341.02 and 21,823.61

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Solution

The fourth proportional to 56,886.69, 85,341.02 and 21,823.61 is: 32,739.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,886.69 : 85,341.02 = 21,823.61 : x
  2. Step 2: Convert to fraction form
    56,886.69/85,341.02 = 21,823.61/x
  3. Step 3: Cross multiply
    56,886.69x = 85,341.02 × 21,823.61
  4. Step 4: Simplify right side
    56,886.69x = 1,862,449,137.48
  5. Step 5: Solve for x
    x = 1,862,449,137.48/56,886.69
  6. Step 6: Final answer
    x = 32,739.63

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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.