Home / 81,022.40-121,570.05-36,626.30

Finding the Fourth Proportional to 81,022.40, 121,570.05 and 36,626.30

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Solution

The fourth proportional to 81,022.40, 121,570.05 and 36,626.30 is: 54,955.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,022.40 : 121,570.05 = 36,626.30 : x
  2. Step 2: Convert to fraction form
    81,022.40/121,570.05 = 36,626.30/x
  3. Step 3: Cross multiply
    81,022.40x = 121,570.05 × 36,626.30
  4. Step 4: Simplify right side
    81,022.40x = 4,452,661,122.32
  5. Step 5: Solve for x
    x = 4,452,661,122.32/81,022.40
  6. Step 6: Final answer
    x = 54,955.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.