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Finding the Fourth Proportional to 71,686.15, 98,932.08 and 43,007.05

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Solution

The fourth proportional to 71,686.15, 98,932.08 and 43,007.05 is: 59,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,686.15 : 98,932.08 = 43,007.05 : x
  2. Step 2: Convert to fraction form
    71,686.15/98,932.08 = 43,007.05/x
  3. Step 3: Cross multiply
    71,686.15x = 98,932.08 × 43,007.05
  4. Step 4: Simplify right side
    71,686.15x = 4,254,777,196.11
  5. Step 5: Solve for x
    x = 4,254,777,196.11/71,686.15
  6. Step 6: Final answer
    x = 59,352.85

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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.