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Finding the Fourth Proportional to 56,759.60, 84,990.56 and 40,028.96

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Solution

The fourth proportional to 56,759.60, 84,990.56 and 40,028.96 is: 59,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,759.60 : 84,990.56 = 40,028.96 : x
  2. Step 2: Convert to fraction form
    56,759.60/84,990.56 = 40,028.96/x
  3. Step 3: Cross multiply
    56,759.60x = 84,990.56 × 40,028.96
  4. Step 4: Simplify right side
    56,759.60x = 3,402,083,726.62
  5. Step 5: Solve for x
    x = 3,402,083,726.62/56,759.60
  6. Step 6: Final answer
    x = 59,938.47

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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.