Home / 81,302.40-112,187.52-45,489.60

Finding the Fourth Proportional to 81,302.40, 112,187.52 and 45,489.60

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Solution

The fourth proportional to 81,302.40, 112,187.52 and 45,489.60 is: 62,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,302.40 : 112,187.52 = 45,489.60 : x
  2. Step 2: Convert to fraction form
    81,302.40/112,187.52 = 45,489.60/x
  3. Step 3: Cross multiply
    81,302.40x = 112,187.52 × 45,489.60
  4. Step 4: Simplify right side
    81,302.40x = 5,103,365,409.79
  5. Step 5: Solve for x
    x = 5,103,365,409.79/81,302.40
  6. Step 6: Final answer
    x = 62,770.17

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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.