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Finding the Fourth Proportional to 66,192.55, 91,347.68 and 40,713.86

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Solution

The fourth proportional to 66,192.55, 91,347.68 and 40,713.86 is: 56,186.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,192.55 : 91,347.68 = 40,713.86 : x
  2. Step 2: Convert to fraction form
    66,192.55/91,347.68 = 40,713.86/x
  3. Step 3: Cross multiply
    66,192.55x = 91,347.68 × 40,713.86
  4. Step 4: Simplify right side
    66,192.55x = 3,719,116,985.00
  5. Step 5: Solve for x
    x = 3,719,116,985.00/66,192.55
  6. Step 6: Final answer
    x = 56,186.34

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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.