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Finding the Fourth Proportional to 71,814.61, 99,146.60 and 63,833.77

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Solution

The fourth proportional to 71,814.61, 99,146.60 and 63,833.77 is: 88,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,814.61 : 99,146.60 = 63,833.77 : x
  2. Step 2: Convert to fraction form
    71,814.61/99,146.60 = 63,833.77/x
  3. Step 3: Cross multiply
    71,814.61x = 99,146.60 × 63,833.77
  4. Step 4: Simplify right side
    71,814.61x = 6,328,901,260.68
  5. Step 5: Solve for x
    x = 6,328,901,260.68/71,814.61
  6. Step 6: Final answer
    x = 88,128.32

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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.