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Finding the Fourth Proportional to 76,517.76, 105,578.12 and 44,672.20

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Solution

The fourth proportional to 76,517.76, 105,578.12 and 44,672.20 is: 61,638.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,517.76 : 105,578.12 = 44,672.20 : x
  2. Step 2: Convert to fraction form
    76,517.76/105,578.12 = 44,672.20/x
  3. Step 3: Cross multiply
    76,517.76x = 105,578.12 × 44,672.20
  4. Step 4: Simplify right side
    76,517.76x = 4,716,406,892.26
  5. Step 5: Solve for x
    x = 4,716,406,892.26/76,517.76
  6. Step 6: Final answer
    x = 61,638.07

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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.