Home / 66,636.96-91,960.12-39,774.24

Finding the Fourth Proportional to 66,636.96, 91,960.12 and 39,774.24

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Solution

The fourth proportional to 66,636.96, 91,960.12 and 39,774.24 is: 54,889.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,636.96 : 91,960.12 = 39,774.24 : x
  2. Step 2: Convert to fraction form
    66,636.96/91,960.12 = 39,774.24/x
  3. Step 3: Cross multiply
    66,636.96x = 91,960.12 × 39,774.24
  4. Step 4: Simplify right side
    66,636.96x = 3,657,643,883.31
  5. Step 5: Solve for x
    x = 3,657,643,883.31/66,636.96
  6. Step 6: Final answer
    x = 54,889.12

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1.5x scale

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.