Home / 71,419.10-107,035.38-39,827.90

Finding the Fourth Proportional to 71,419.10, 107,035.38 and 39,827.90

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Solution

The fourth proportional to 71,419.10, 107,035.38 and 39,827.90 is: 59,689.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,419.10 : 107,035.38 = 39,827.90 : x
  2. Step 2: Convert to fraction form
    71,419.10/107,035.38 = 39,827.90/x
  3. Step 3: Cross multiply
    71,419.10x = 107,035.38 × 39,827.90
  4. Step 4: Simplify right side
    71,419.10x = 4,262,994,411.10
  5. Step 5: Solve for x
    x = 4,262,994,411.10/71,419.10
  6. Step 6: Final answer
    x = 59,689.84

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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.