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Finding the Fourth Proportional to 85,034.58, 117,509.58 and 63,776.94

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Solution

The fourth proportional to 85,034.58, 117,509.58 and 63,776.94 is: 88,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,034.58 : 117,509.58 = 63,776.94 : x
  2. Step 2: Convert to fraction form
    85,034.58/117,509.58 = 63,776.94/x
  3. Step 3: Cross multiply
    85,034.58x = 117,509.58 × 63,776.94
  4. Step 4: Simplify right side
    85,034.58x = 7,494,401,433.09
  5. Step 5: Solve for x
    x = 7,494,401,433.09/85,034.58
  6. Step 6: Final answer
    x = 88,133.57

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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.