Home / 66,146.55-91,279.62-39,288.35

Finding the Fourth Proportional to 66,146.55, 91,279.62 and 39,288.35

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Solution

The fourth proportional to 66,146.55, 91,279.62 and 39,288.35 is: 54,216.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,146.55 : 91,279.62 = 39,288.35 : x
  2. Step 2: Convert to fraction form
    66,146.55/91,279.62 = 39,288.35/x
  3. Step 3: Cross multiply
    66,146.55x = 91,279.62 × 39,288.35
  4. Step 4: Simplify right side
    66,146.55x = 3,586,225,202.03
  5. Step 5: Solve for x
    x = 3,586,225,202.03/66,146.55
  6. Step 6: Final answer
    x = 54,216.36

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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.