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Finding the Fourth Proportional to 85,000.88, 117,299.64 and 47,274.80

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Solution

The fourth proportional to 85,000.88, 117,299.64 and 47,274.80 is: 65,238.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,000.88 : 117,299.64 = 47,274.80 : x
  2. Step 2: Convert to fraction form
    85,000.88/117,299.64 = 47,274.80/x
  3. Step 3: Cross multiply
    85,000.88x = 117,299.64 × 47,274.80
  4. Step 4: Simplify right side
    85,000.88x = 5,545,317,021.07
  5. Step 5: Solve for x
    x = 5,545,317,021.07/85,000.88
  6. Step 6: Final answer
    x = 65,238.35

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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.