Home / 56,740.11-85,162.72-28,680

Finding the Fourth Proportional to 56,740.11, 85,162.72 and 28,680

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Solution

The fourth proportional to 56,740.11, 85,162.72 and 28,680 is: 43,046.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,740.11 : 85,162.72 = 28,680 : x
  2. Step 2: Convert to fraction form
    56,740.11/85,162.72 = 28,680/x
  3. Step 3: Cross multiply
    56,740.11x = 85,162.72 × 28,680
  4. Step 4: Simplify right side
    56,740.11x = 2,442,466,809.60
  5. Step 5: Solve for x
    x = 2,442,466,809.60/56,740.11
  6. Step 6: Final answer
    x = 43,046.56

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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.