Home / 90,539.48-135,809.24-28,214.84

Finding the Fourth Proportional to 90,539.48, 135,809.24 and 28,214.84

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Solution

The fourth proportional to 90,539.48, 135,809.24 and 28,214.84 is: 42,322.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,539.48 : 135,809.24 = 28,214.84 : x
  2. Step 2: Convert to fraction form
    90,539.48/135,809.24 = 28,214.84/x
  3. Step 3: Cross multiply
    90,539.48x = 135,809.24 × 28,214.84
  4. Step 4: Simplify right side
    90,539.48x = 3,831,835,977.12
  5. Step 5: Solve for x
    x = 3,831,835,977.12/90,539.48
  6. Step 6: Final answer
    x = 42,322.27

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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.