Home / 66,301.12-91,529.40-51,159.76

Finding the Fourth Proportional to 66,301.12, 91,529.40 and 51,159.76

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Solution

The fourth proportional to 66,301.12, 91,529.40 and 51,159.76 is: 70,626.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,301.12 : 91,529.40 = 51,159.76 : x
  2. Step 2: Convert to fraction form
    66,301.12/91,529.40 = 51,159.76/x
  3. Step 3: Cross multiply
    66,301.12x = 91,529.40 × 51,159.76
  4. Step 4: Simplify right side
    66,301.12x = 4,682,622,136.94
  5. Step 5: Solve for x
    x = 4,682,622,136.94/66,301.12
  6. Step 6: Final answer
    x = 70,626.59

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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.