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Finding the Fourth Proportional to 66,314.70, 91,444.14 and 51,209.82

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Solution

The fourth proportional to 66,314.70, 91,444.14 and 51,209.82 is: 70,615.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,314.70 : 91,444.14 = 51,209.82 : x
  2. Step 2: Convert to fraction form
    66,314.70/91,444.14 = 51,209.82/x
  3. Step 3: Cross multiply
    66,314.70x = 91,444.14 × 51,209.82
  4. Step 4: Simplify right side
    66,314.70x = 4,682,837,949.45
  5. Step 5: Solve for x
    x = 4,682,837,949.45/66,314.70
  6. Step 6: Final answer
    x = 70,615.38

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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.