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Finding the Fourth Proportional to 71,322.93, 98,418.80 and 42,636.92

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Solution

The fourth proportional to 71,322.93, 98,418.80 and 42,636.92 is: 58,834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,322.93 : 98,418.80 = 42,636.92 : x
  2. Step 2: Convert to fraction form
    71,322.93/98,418.80 = 42,636.92/x
  3. Step 3: Cross multiply
    71,322.93x = 98,418.80 × 42,636.92
  4. Step 4: Simplify right side
    71,322.93x = 4,196,273,796.82
  5. Step 5: Solve for x
    x = 4,196,273,796.82/71,322.93
  6. Step 6: Final answer
    x = 58,834.85

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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.