Home / 51,579.47-77,391.08-28,178.57

Finding the Fourth Proportional to 51,579.47, 77,391.08 and 28,178.57

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Solution

The fourth proportional to 51,579.47, 77,391.08 and 28,178.57 is: 42,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,579.47 : 77,391.08 = 28,178.57 : x
  2. Step 2: Convert to fraction form
    51,579.47/77,391.08 = 28,178.57/x
  3. Step 3: Cross multiply
    51,579.47x = 77,391.08 × 28,178.57
  4. Step 4: Simplify right side
    51,579.47x = 2,180,769,437.31
  5. Step 5: Solve for x
    x = 2,180,769,437.31/51,579.47
  6. Step 6: Final answer
    x = 42,279.80

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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.