Home / 66,221.03-91,405.92-42,347.79

Finding the Fourth Proportional to 66,221.03, 91,405.92 and 42,347.79

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Solution

The fourth proportional to 66,221.03, 91,405.92 and 42,347.79 is: 58,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,221.03 : 91,405.92 = 42,347.79 : x
  2. Step 2: Convert to fraction form
    66,221.03/91,405.92 = 42,347.79/x
  3. Step 3: Cross multiply
    66,221.03x = 91,405.92 × 42,347.79
  4. Step 4: Simplify right side
    66,221.03x = 3,870,838,704.92
  5. Step 5: Solve for x
    x = 3,870,838,704.92/66,221.03
  6. Step 6: Final answer
    x = 58,453.32

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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.