Home / 66,977.12-92,431.32-40,124

Finding the Fourth Proportional to 66,977.12, 92,431.32 and 40,124

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Solution

The fourth proportional to 66,977.12, 92,431.32 and 40,124 is: 55,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,977.12 : 92,431.32 = 40,124 : x
  2. Step 2: Convert to fraction form
    66,977.12/92,431.32 = 40,124/x
  3. Step 3: Cross multiply
    66,977.12x = 92,431.32 × 40,124
  4. Step 4: Simplify right side
    66,977.12x = 3,708,714,283.68
  5. Step 5: Solve for x
    x = 3,708,714,283.68/66,977.12
  6. Step 6: Final answer
    x = 55,372.85

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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.