Home / 51,960.80-77,948.40-18,672.80

Finding the Fourth Proportional to 51,960.80, 77,948.40 and 18,672.80

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Solution

The fourth proportional to 51,960.80, 77,948.40 and 18,672.80 is: 28,011.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,960.80 : 77,948.40 = 18,672.80 : x
  2. Step 2: Convert to fraction form
    51,960.80/77,948.40 = 18,672.80/x
  3. Step 3: Cross multiply
    51,960.80x = 77,948.40 × 18,672.80
  4. Step 4: Simplify right side
    51,960.80x = 1,455,514,883.52
  5. Step 5: Solve for x
    x = 1,455,514,883.52/51,960.80
  6. Step 6: Final answer
    x = 28,011.79

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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.