Home / 49,913.55-68,809.14-30,780.47

Finding the Fourth Proportional to 49,913.55, 68,809.14 and 30,780.47

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Solution

The fourth proportional to 49,913.55, 68,809.14 and 30,780.47 is: 42,432.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,913.55 : 68,809.14 = 30,780.47 : x
  2. Step 2: Convert to fraction form
    49,913.55/68,809.14 = 30,780.47/x
  3. Step 3: Cross multiply
    49,913.55x = 68,809.14 × 30,780.47
  4. Step 4: Simplify right side
    49,913.55x = 2,117,977,841.52
  5. Step 5: Solve for x
    x = 2,117,977,841.52/49,913.55
  6. Step 6: Final answer
    x = 42,432.92

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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.