Home / 88,530.28-121,484.48-80,511.28

Finding the Fourth Proportional to 88,530.28, 121,484.48 and 80,511.28

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Solution

The fourth proportional to 88,530.28, 121,484.48 and 80,511.28 is: 110,480.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,530.28 : 121,484.48 = 80,511.28 : x
  2. Step 2: Convert to fraction form
    88,530.28/121,484.48 = 80,511.28/x
  3. Step 3: Cross multiply
    88,530.28x = 121,484.48 × 80,511.28
  4. Step 4: Simplify right side
    88,530.28x = 9,780,870,984.93
  5. Step 5: Solve for x
    x = 9,780,870,984.93/88,530.28
  6. Step 6: Final answer
    x = 110,480.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.