Home / 91,451.40-126,214.54-55,639.28

Finding the Fourth Proportional to 91,451.40, 126,214.54 and 55,639.28

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Solution

The fourth proportional to 91,451.40, 126,214.54 and 55,639.28 is: 76,789.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,451.40 : 126,214.54 = 55,639.28 : x
  2. Step 2: Convert to fraction form
    91,451.40/126,214.54 = 55,639.28/x
  3. Step 3: Cross multiply
    91,451.40x = 126,214.54 × 55,639.28
  4. Step 4: Simplify right side
    91,451.40x = 7,022,486,131.13
  5. Step 5: Solve for x
    x = 7,022,486,131.13/91,451.40
  6. Step 6: Final answer
    x = 76,789.27

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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.