Home / 66,575.11-91,861.38-39,355.58

Finding the Fourth Proportional to 66,575.11, 91,861.38 and 39,355.58

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Solution

The fourth proportional to 66,575.11, 91,861.38 and 39,355.58 is: 54,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,575.11 : 91,861.38 = 39,355.58 : x
  2. Step 2: Convert to fraction form
    66,575.11/91,861.38 = 39,355.58/x
  3. Step 3: Cross multiply
    66,575.11x = 91,861.38 × 39,355.58
  4. Step 4: Simplify right side
    66,575.11x = 3,615,257,971.57
  5. Step 5: Solve for x
    x = 3,615,257,971.57/66,575.11
  6. Step 6: Final answer
    x = 54,303.45

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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.