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Finding the Fourth Proportional to 75,141.67, 103,700.50 and 43,312.62

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Solution

The fourth proportional to 75,141.67, 103,700.50 and 43,312.62 is: 59,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,141.67 : 103,700.50 = 43,312.62 : x
  2. Step 2: Convert to fraction form
    75,141.67/103,700.50 = 43,312.62/x
  3. Step 3: Cross multiply
    75,141.67x = 103,700.50 × 43,312.62
  4. Step 4: Simplify right side
    75,141.67x = 4,491,540,350.31
  5. Step 5: Solve for x
    x = 4,491,540,350.31/75,141.67
  6. Step 6: Final answer
    x = 59,774.30

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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.