Home / 45,170.05-67,418.88-39,139.18

Finding the Fourth Proportional to 45,170.05, 67,418.88 and 39,139.18

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Solution

The fourth proportional to 45,170.05, 67,418.88 and 39,139.18 is: 58,417.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,170.05 : 67,418.88 = 39,139.18 : x
  2. Step 2: Convert to fraction form
    45,170.05/67,418.88 = 39,139.18/x
  3. Step 3: Cross multiply
    45,170.05x = 67,418.88 × 39,139.18
  4. Step 4: Simplify right side
    45,170.05x = 2,638,719,679.72
  5. Step 5: Solve for x
    x = 2,638,719,679.72/45,170.05
  6. Step 6: Final answer
    x = 58,417.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.