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Finding the Fourth Proportional to 51,980.88, 77,979 and 15,040.08

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Solution

The fourth proportional to 51,980.88, 77,979 and 15,040.08 is: 22,562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,980.88 : 77,979 = 15,040.08 : x
  2. Step 2: Convert to fraction form
    51,980.88/77,979 = 15,040.08/x
  3. Step 3: Cross multiply
    51,980.88x = 77,979 × 15,040.08
  4. Step 4: Simplify right side
    51,980.88x = 1,172,810,398.32
  5. Step 5: Solve for x
    x = 1,172,810,398.32/51,980.88
  6. Step 6: Final answer
    x = 22,562.34

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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.