Home / 66,390.45-91,612.26-39,165.95

Finding the Fourth Proportional to 66,390.45, 91,612.26 and 39,165.95

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Solution

The fourth proportional to 66,390.45, 91,612.26 and 39,165.95 is: 54,045.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,390.45 : 91,612.26 = 39,165.95 : x
  2. Step 2: Convert to fraction form
    66,390.45/91,612.26 = 39,165.95/x
  3. Step 3: Cross multiply
    66,390.45x = 91,612.26 × 39,165.95
  4. Step 4: Simplify right side
    66,390.45x = 3,588,080,736.49
  5. Step 5: Solve for x
    x = 3,588,080,736.49/66,390.45
  6. Step 6: Final answer
    x = 54,045.13

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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.