Home / 51,490.07-77,175.79-19,886.20

Finding the Fourth Proportional to 51,490.07, 77,175.79 and 19,886.20

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Solution

The fourth proportional to 51,490.07, 77,175.79 and 19,886.20 is: 29,806.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,490.07 : 77,175.79 = 19,886.20 : x
  2. Step 2: Convert to fraction form
    51,490.07/77,175.79 = 19,886.20/x
  3. Step 3: Cross multiply
    51,490.07x = 77,175.79 × 19,886.20
  4. Step 4: Simplify right side
    51,490.07x = 1,534,732,952.44
  5. Step 5: Solve for x
    x = 1,534,732,952.44/51,490.07
  6. Step 6: Final answer
    x = 29,806.39

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1.5x scale

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.