Home / 66,370.32-91,604.40-40,889.28

Finding the Fourth Proportional to 66,370.32, 91,604.40 and 40,889.28

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Solution

The fourth proportional to 66,370.32, 91,604.40 and 40,889.28 is: 56,435.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,370.32 : 91,604.40 = 40,889.28 : x
  2. Step 2: Convert to fraction form
    66,370.32/91,604.40 = 40,889.28/x
  3. Step 3: Cross multiply
    66,370.32x = 91,604.40 × 40,889.28
  4. Step 4: Simplify right side
    66,370.32x = 3,745,637,960.83
  5. Step 5: Solve for x
    x = 3,745,637,960.83/66,370.32
  6. Step 6: Final answer
    x = 56,435.44

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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.