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Finding the Fourth Proportional to 86,492.88, 119,272.86 and 57,812.60

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Solution

The fourth proportional to 86,492.88, 119,272.86 and 57,812.60 is: 79,723.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,492.88 : 119,272.86 = 57,812.60 : x
  2. Step 2: Convert to fraction form
    86,492.88/119,272.86 = 57,812.60/x
  3. Step 3: Cross multiply
    86,492.88x = 119,272.86 × 57,812.60
  4. Step 4: Simplify right side
    86,492.88x = 6,895,474,444.22
  5. Step 5: Solve for x
    x = 6,895,474,444.22/86,492.88
  6. Step 6: Final answer
    x = 79,723.03

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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.