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Finding the Fourth Proportional to 66,344.94, 91,556.28 and 39,487.32

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Solution

The fourth proportional to 66,344.94, 91,556.28 and 39,487.32 is: 54,492.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,344.94 : 91,556.28 = 39,487.32 : x
  2. Step 2: Convert to fraction form
    66,344.94/91,556.28 = 39,487.32/x
  3. Step 3: Cross multiply
    66,344.94x = 91,556.28 × 39,487.32
  4. Step 4: Simplify right side
    66,344.94x = 3,615,312,126.37
  5. Step 5: Solve for x
    x = 3,615,312,126.37/66,344.94
  6. Step 6: Final answer
    x = 54,492.66

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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.