Home / 53,138.34-79,706.18-21,539.95

Finding the Fourth Proportional to 53,138.34, 79,706.18 and 21,539.95

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Solution

The fourth proportional to 53,138.34, 79,706.18 and 21,539.95 is: 32,309.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,138.34 : 79,706.18 = 21,539.95 : x
  2. Step 2: Convert to fraction form
    53,138.34/79,706.18 = 21,539.95/x
  3. Step 3: Cross multiply
    53,138.34x = 79,706.18 × 21,539.95
  4. Step 4: Simplify right side
    53,138.34x = 1,716,867,131.89
  5. Step 5: Solve for x
    x = 1,716,867,131.89/53,138.34
  6. Step 6: Final answer
    x = 32,309.39

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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.