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Finding the Fourth Proportional to 75,139.56, 103,695.72 and 41,605.56

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Solution

The fourth proportional to 75,139.56, 103,695.72 and 41,605.56 is: 57,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,139.56 : 103,695.72 = 41,605.56 : x
  2. Step 2: Convert to fraction form
    75,139.56/103,695.72 = 41,605.56/x
  3. Step 3: Cross multiply
    75,139.56x = 103,695.72 × 41,605.56
  4. Step 4: Simplify right side
    75,139.56x = 4,314,318,500.20
  5. Step 5: Solve for x
    x = 4,314,318,500.20/75,139.56
  6. Step 6: Final answer
    x = 57,417.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.