Home / 76,328.32-114,456.12-28,281.28

Finding the Fourth Proportional to 76,328.32, 114,456.12 and 28,281.28

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Solution

The fourth proportional to 76,328.32, 114,456.12 and 28,281.28 is: 42,408.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,328.32 : 114,456.12 = 28,281.28 : x
  2. Step 2: Convert to fraction form
    76,328.32/114,456.12 = 28,281.28/x
  3. Step 3: Cross multiply
    76,328.32x = 114,456.12 × 28,281.28
  4. Step 4: Simplify right side
    76,328.32x = 3,236,965,577.43
  5. Step 5: Solve for x
    x = 3,236,965,577.43/76,328.32
  6. Step 6: Final answer
    x = 42,408.45

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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.