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Finding the Fourth Proportional to 66,344.85, 91,549.87 and 39,483.02

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Solution

The fourth proportional to 66,344.85, 91,549.87 and 39,483.02 is: 54,482.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,344.85 : 91,549.87 = 39,483.02 : x
  2. Step 2: Convert to fraction form
    66,344.85/91,549.87 = 39,483.02/x
  3. Step 3: Cross multiply
    66,344.85x = 91,549.87 × 39,483.02
  4. Step 4: Simplify right side
    66,344.85x = 3,614,665,478.37
  5. Step 5: Solve for x
    x = 3,614,665,478.37/66,344.85
  6. Step 6: Final answer
    x = 54,482.99

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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.