Home / 71,319.08-106,998.62-28,654.47

Finding the Fourth Proportional to 71,319.08, 106,998.62 and 28,654.47

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Solution

The fourth proportional to 71,319.08, 106,998.62 and 28,654.47 is: 42,989.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,319.08 : 106,998.62 = 28,654.47 : x
  2. Step 2: Convert to fraction form
    71,319.08/106,998.62 = 28,654.47/x
  3. Step 3: Cross multiply
    71,319.08x = 106,998.62 × 28,654.47
  4. Step 4: Simplify right side
    71,319.08x = 3,065,988,965.36
  5. Step 5: Solve for x
    x = 3,065,988,965.36/71,319.08
  6. Step 6: Final answer
    x = 42,989.74

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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.