Home / 52,281.11-78,422.51-18,980.39

Finding the Fourth Proportional to 52,281.11, 78,422.51 and 18,980.39

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Solution

The fourth proportional to 52,281.11, 78,422.51 and 18,980.39 is: 28,470.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,281.11 : 78,422.51 = 18,980.39 : x
  2. Step 2: Convert to fraction form
    52,281.11/78,422.51 = 18,980.39/x
  3. Step 3: Cross multiply
    52,281.11x = 78,422.51 × 18,980.39
  4. Step 4: Simplify right side
    52,281.11x = 1,488,489,479.92
  5. Step 5: Solve for x
    x = 1,488,489,479.92/52,281.11
  6. Step 6: Final answer
    x = 28,470.89

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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.