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Finding the Fourth Proportional to 67,418.76, 101,128.18 and 18,170.76

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Solution

The fourth proportional to 67,418.76, 101,128.18 and 18,170.76 is: 27,256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,418.76 : 101,128.18 = 18,170.76 : x
  2. Step 2: Convert to fraction form
    67,418.76/101,128.18 = 18,170.76/x
  3. Step 3: Cross multiply
    67,418.76x = 101,128.18 × 18,170.76
  4. Step 4: Simplify right side
    67,418.76x = 1,837,575,888.02
  5. Step 5: Solve for x
    x = 1,837,575,888.02/67,418.76
  6. Step 6: Final answer
    x = 27,256.15

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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.