Home / 89,063.52-122,888-54,615.60

Finding the Fourth Proportional to 89,063.52, 122,888 and 54,615.60

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Solution

The fourth proportional to 89,063.52, 122,888 and 54,615.60 is: 75,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,063.52 : 122,888 = 54,615.60 : x
  2. Step 2: Convert to fraction form
    89,063.52/122,888 = 54,615.60/x
  3. Step 3: Cross multiply
    89,063.52x = 122,888 × 54,615.60
  4. Step 4: Simplify right side
    89,063.52x = 6,711,601,852.80
  5. Step 5: Solve for x
    x = 6,711,601,852.80/89,063.52
  6. Step 6: Final answer
    x = 75,357.47

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1.5x scale

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.