Home / 76,830.40-115,261.12-32,457.28

Finding the Fourth Proportional to 76,830.40, 115,261.12 and 32,457.28

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Solution

The fourth proportional to 76,830.40, 115,261.12 and 32,457.28 is: 48,692.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,830.40 : 115,261.12 = 32,457.28 : x
  2. Step 2: Convert to fraction form
    76,830.40/115,261.12 = 32,457.28/x
  3. Step 3: Cross multiply
    76,830.40x = 115,261.12 × 32,457.28
  4. Step 4: Simplify right side
    76,830.40x = 3,741,062,444.95
  5. Step 5: Solve for x
    x = 3,741,062,444.95/76,830.40
  6. Step 6: Final answer
    x = 48,692.48

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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.