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Finding the Fourth Proportional to 59,959.04, 89,940 and 20,515.88

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Solution

The fourth proportional to 59,959.04, 89,940 and 20,515.88 is: 30,774.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,959.04 : 89,940 = 20,515.88 : x
  2. Step 2: Convert to fraction form
    59,959.04/89,940 = 20,515.88/x
  3. Step 3: Cross multiply
    59,959.04x = 89,940 × 20,515.88
  4. Step 4: Simplify right side
    59,959.04x = 1,845,198,247.20
  5. Step 5: Solve for x
    x = 1,845,198,247.20/59,959.04
  6. Step 6: Final answer
    x = 30,774.31

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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.