Home / 48,291.75-72,431.49-18,689.34

Finding the Fourth Proportional to 48,291.75, 72,431.49 and 18,689.34

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Solution

The fourth proportional to 48,291.75, 72,431.49 and 18,689.34 is: 28,031.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,291.75 : 72,431.49 = 18,689.34 : x
  2. Step 2: Convert to fraction form
    48,291.75/72,431.49 = 18,689.34/x
  3. Step 3: Cross multiply
    48,291.75x = 72,431.49 × 18,689.34
  4. Step 4: Simplify right side
    48,291.75x = 1,353,696,743.32
  5. Step 5: Solve for x
    x = 1,353,696,743.32/48,291.75
  6. Step 6: Final answer
    x = 28,031.64

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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.