Home / 90,539.88-135,817.31-28,210.38

Finding the Fourth Proportional to 90,539.88, 135,817.31 and 28,210.38

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Solution

The fourth proportional to 90,539.88, 135,817.31 and 28,210.38 is: 42,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,539.88 : 135,817.31 = 28,210.38 : x
  2. Step 2: Convert to fraction form
    90,539.88/135,817.31 = 28,210.38/x
  3. Step 3: Cross multiply
    90,539.88x = 135,817.31 × 28,210.38
  4. Step 4: Simplify right side
    90,539.88x = 3,831,457,925.68
  5. Step 5: Solve for x
    x = 3,831,457,925.68/90,539.88
  6. Step 6: Final answer
    x = 42,317.90

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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.