Home / 66,211.13-91,378.97-39,353.37

Finding the Fourth Proportional to 66,211.13, 91,378.97 and 39,353.37

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Solution

The fourth proportional to 66,211.13, 91,378.97 and 39,353.37 is: 54,312.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,211.13 : 91,378.97 = 39,353.37 : x
  2. Step 2: Convert to fraction form
    66,211.13/91,378.97 = 39,353.37/x
  3. Step 3: Cross multiply
    66,211.13x = 91,378.97 × 39,353.37
  4. Step 4: Simplify right side
    66,211.13x = 3,596,070,416.63
  5. Step 5: Solve for x
    x = 3,596,070,416.63/66,211.13
  6. Step 6: Final answer
    x = 54,312.17

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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.