Home / 84,458.16-126,636.88-28,284.64

Finding the Fourth Proportional to 84,458.16, 126,636.88 and 28,284.64

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Solution

The fourth proportional to 84,458.16, 126,636.88 and 28,284.64 is: 42,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,458.16 : 126,636.88 = 28,284.64 : x
  2. Step 2: Convert to fraction form
    84,458.16/126,636.88 = 28,284.64/x
  3. Step 3: Cross multiply
    84,458.16x = 126,636.88 × 28,284.64
  4. Step 4: Simplify right side
    84,458.16x = 3,581,878,561.52
  5. Step 5: Solve for x
    x = 3,581,878,561.52/84,458.16
  6. Step 6: Final answer
    x = 42,410.09

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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.