Home / 105,517.60-158,276.40-31,645.60

Finding the Fourth Proportional to 105,517.60, 158,276.40 and 31,645.60

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Solution

The fourth proportional to 105,517.60, 158,276.40 and 31,645.60 is: 47,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,517.60 : 158,276.40 = 31,645.60 : x
  2. Step 2: Convert to fraction form
    105,517.60/158,276.40 = 31,645.60/x
  3. Step 3: Cross multiply
    105,517.60x = 158,276.40 × 31,645.60
  4. Step 4: Simplify right side
    105,517.60x = 5,008,751,643.84
  5. Step 5: Solve for x
    x = 5,008,751,643.84/105,517.60
  6. Step 6: Final answer
    x = 47,468.40

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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.